Sticky Note

---

Sticky note

Represents a sticky note on a board.
Useful to take quick notes while brainstorming, to drive design thinking sessions, to visualize content structure and information architecture hierarchies.

When creating or updating a sticky note item, you can define its dimensions in the following way:

• Set or update only width.
  Default width:
  • shape: 'square': 199 dp
  • shape: 'rectangle': 350 dp
• Set or update only height.
  Default height with either shape: 'square', or shape: 'rectangle': 228 dp (it includes the sticky note shadow)

Based on the specified value, the sticky note is scaled accordingly to keep its aspect ratio.

Example:

const stickyNote = await miro.board.createStickyNote({
  content: '<p>This is a sticky note. It looks just like the actual paper one.</p>',
  style: {
    fillColor: 'light_yellow', // Default value: light yellow
    textAlign: 'center', // Default alignment: center
    textAlignVertical: 'middle', // Default alignment: middle
  },
  x: 0, // Default value: horizontal center of the board
  y: 0, // Default value: vertical center of the board
  shape: 'square',
  width: 200, // Set either 'width', or 'height'
});

// Output the created item to the developer console
console.log(stickyNote);

Sticky note item:

Figure 1. Sticky note item.

Properties

width

number

Width of the item in dp.

See also:

• Pixels and dimensions

---

height

number

Height of the item in dp.

See also:

• Pixels and dimensions

---

shape

'square' | 'rectangle'

Defines the shape of the sticky note item.
Possible values:

• square: the sticky note item is square (sticky note shadow excluded).
• rectangle: the sticky note item is rectangular.

Default: square

• Default width:
  • shape: 'square': 199 dp
  • shape: 'rectangle': 350 dp
• Default height with either square, or rectangle: 228 dp (it includes the sticky note shadow)

---

content

string

The text that you want to display on the sticky note.
The text must be shorter than 6000 characters.

content supports plain text, and the following HTML tags:

• <p>
• <a>
• <strong>
• <b>
• <em>
• <i>
• <u>
• <s>
• <br>

Unsupported HTML tags are automatically escaped. Therefore, in the sticky note item on the board they're rendered as plain text literals, instead of HTML output.

---

style

{
  fillColor: 'red' | StickyNoteColor | 'gray' | 'light_yellow' | 'yellow' | '...'
  textAlign: 'left' | 'center' | 'right'
  textAlignVertical: 'top' | 'middle' | 'bottom'
}

The style object groups properties that define the layout, the look and feel of specific elements of an item, when it's displayed on the board.
For example: background color, font family, font type, horizontal and vertical alignment of the text, text color, and so on.

The Miro Web SDK doesn't support all standard style, yet. Additional styles will be included in future releases.

style data structure:

style: {
  fillColor: 'light_yellow', // Default value: light yellow
  textAlign: 'center', // Default alignment: center
  textAlignVertical: 'middle', // Default alignment: middle
},

fillColor

A literal value that assigns a color to the background of the sticky note.
Possible values:

• gray
• light_yellow
• yellow
• orange
• light_green
• green
• dark_green
• cyan
• light_pink
• pink
• violet
• red
• light_blue
• blue
• dark_blue
• black

Default: light_yellow

textAlign

Sets the horizontal alignment of any text in the content property of the sticky note item.

Possible values:

• left: the text is aligned with the left margin of the text area.
• center: the text is at an equal distance from the left and right margins of the text area.
• right: the text is aligned with the right margin of the text area.

Default: center

textAlignVertical

Sets the vertical alignment of any text in the content property of the sticky note item.

Possible values:

• top: the text is aligned with the top margin of the text area.
• middle: the text is at an equal distance from the top and bottom margins of the text area.
• bottom: the text is aligned with the bottom margin of the text area.

Default: middle

---

tagIds

Array<string>

An array of tag IDs.
Each ID corresponds to a board tag attached to a card or a sticky note.

To add a tag to a card or a sticky note:

1. Add the tag ID to the tagIds array.
2. Call sync on the item to update it on the board (see example below).

To remove a tag from a card or a sticky note:

1. Remove the tag ID from the tagIds array.
2. Call sync on the item to update it on the board (see example below).

When you remove a tag from an item, the tag still exists on the board.

To retrieve all cards or sticky notes with one or more specific tags:

1. Specify the item type to retrieve: either card, or sticky_note.
2. Specify one or more tags as filtering criteria.

Add and remove tags to and from a sticky note

Example (tag):

// Create a tag
const todo = await miro.board.createTag({
  title: 'todo',
  color: 'yellow',
});

// Create another tag
const urgent = await miro.board.createTag({
  title: 'urgent',
  color: 'magenta',
});

// Create a sticky note and attach the tags to it
const stickyNote = await miro.board.createStickyNote({
  content: 'sticky note with tags: "todo", "urgent"',
  tagIds: [todo.id, urgent.id],
});

// Call 'sync' to make the attached tags visible on the sticky note on the board
await stickyNote.sync();

console.log(stickyNote.tagIds); // => ['3074457345627244742', '307445734562724503']

// Remove option 1: remove tags from the array
stickyNote.tagIds = [todo.id];

// Remove option 2: remove tags by filtering them out of the array
stickyNote.tagIds = stickyNote.tagIds.filter((id) => id !== todo.id);

// Call 'sync' to update the sticky note after removing the tags
await stickyNote.sync();

console.log(stickyNote.tagIds); // => []

// Delete the tags from the board.
// Bulk operations aren't supported at the moment:
// remove the tags one at a time
await miro.board.remove(todo);
await miro.board.remove(urgent);

await miro.board.get({
  tags: ['todo', 'urgent'],
}); // => []

---

id

readonly string

Unique ID of the item, assigned automatically upon creation.

Example: 3658432978520043388

---

x

number

The x-axis coordinate of an item is the horizontal distance in dp of the center point of the item from the center point of the board.

The center point of the board has x: 0 and y: 0 coordinates.

Default: 0

See also:

• Board coordinates
• x and y: -Infinity

---

y

number

The y-axis coordinate of an item is the vertical distance in dp of the center point of the item from the center point of the board.

The center point of the board has x: 0 and y: 0 coordinates.

Default: 0

See also:

• Board coordinates
• x and y: -Infinity

---

type

readonly 'sticky_note'

Defines the type of item.
Item type is useful to retrieve specific items from a board. For example, you can fetch all card and shape items from the board, and then carry out an action on them.

Example:

// Get all items from the board
const items = await miro.board.get();

// Count all card and shape items on the board
let cards = 0;
let shapes = 0;

items.forEach((items) => {
  switch (items.type) {
    case 'card':
      cards++;
    case 'shape':
      shapes++;
  }
});

// Output to the console the total amount of card and shape items
console.log(`The current board has ${cards} cards and ${shapes} shapes.`);

---

parentId

readonly 'null' | string

If an item is a child of another item, the child's parentId returns the unique identifier of the corresponding parent item.
If an item has no parent, its parentId is null.

You can use the value to retrieve a tree structure when items are nested inside containers.
For example, sticky notes inside frames or text items inside mindmaps.

---

origin

'center'

origin marks:

• The positioning reference point of a board item.
  This is the point used to calculate the x and y coordinates of an item when it's positioned on the board, or when it's a child inside a parent item.
• The rotation pivot point of a board item that supports rotation.

origin accepts only one value: center.
Any other value throws an error.

---

relativeTo

'canvas_center' | 'parent_top_left' | 'parent_center'

The relativeTo property affects the x and y coordinate values of a board item.
relativeTo defines the positioning reference of a board item, which can be:

• Relative to the board
• Relative to a parent item

Depending on whether an item is a child of a parent item or not, relativeTo can have one of the following values:

Value	Description	On the board UI
canvas_center	The item is positioned on the board, and it's not a child of another item. The x and y coordinate values of the item are relative to the center of the board.	Figure 1. The relativeTo property of the board item—a sticky note in the example image—is set to canvas_center. The same mechanism applies to and works in the same way for all supported board items.
parent_top_left	The item is positioned on the board, and it is a child of a parent item. For example, a parent frame. The x and y coordinate values of the child item are relative to the top-left corner of the parent item).	Figure 2. The relativeTo property of the board item—a sticky note in the example image—is set to parent_top_left. The same mechanism applies to and works in the same way for all supported board items.
parent_center	Experimental feature The item is positioned on the board, and it is a child of a parent mind map node. The x and y coordinate values of the item are relative to the center of the parent mind map node item.	Figure 3. The relativeTo property of the child mind map nodes is set to parent_center.

See also:

• Position and coordinates
• Children inside parent items

---

linkedTo?

string

linkedTo is the namespace that enables links to be associated to items on the board.

When this property is utilized, the associated item will display an arrow icon on its top right corner. On click, this icon will navigate to the associated link.

For links that point to another item on the same board, the viewport will automatically move to that item when true is returned.

For links that point to an item on a separate board or an external url, a new tab tab will be opened.

Note: Items of type tag do not support the linkedTo property.

To link an item to another item on the same board, a valid url with an item id must be specified:

const [geoCard] = await miro.board.get({type: 'card'});

const widgetId = `00000000000000000`;
const boardId = 'xxxxxxxxxxx';

// Generate url based on boardId and widgetId
geoCard.linkedTo = `https://miro.com/app/board/${xxxxxxxxxxx}/?moveToWidget=${widgetId}`;

// OR you can use relative URL
geoCard.linkedTo = `/app/board/${xxxxxxxxxxx}/?moveToWidget=${widgetId}`;

// OR you can generate url based on current URL by simply change of query param
const searchParams = new URLSearchParams(window.location.search);
searchParams.set('moveToWidget', widgetId);
const newRelativePathQuery = `${window.location.pathname}?${searchParams.toString()}`;
geoCard.linkedTo = newRelativePathQuery;

To unlink an item to the provided url, set the property to undefined or pass an empty string "":

const [geoCard] = await miro.board.get({type: 'card'});
// Unlink the widget
geoCard.linkedTo = '';
// or
geoCard.linkedTo = undefined;

await geoCard.sync();

console.log(geoCard.linkedTo); // will return empty string: ''

---

createdAt

readonly string

Timestamp

Date and time when the item was created.

Format: UTC, ISO 8601.
Includes a trailing Z offset.

Example: 2021-05-18T07:59:01Z

ℹ️ Note:

• Timestamps indicating creation and update times are always in UTC time, regardless of the time offset configured on the machine where the app runs or where the code is executed.

---

createdBy

readonly string

Miro users are automatically assigned a unique ID.

createdBy contains the ID of the user who created the item.

Example: 3658432978520043388

---

modifiedAt

readonly string

Timestamp

Date and time when the item was last modified.

Format: UTC, ISO 8601.
Includes a trailing Z offset.

Example: 2021-05-18T07:59:01Z

ℹ️ Note:

• Timestamps indicating creation and update times are always in UTC time, regardless of the time offset configured on the machine where the app runs or where the code is executed.

---

modifiedBy

readonly string

Miro users are automatically assigned a unique ID.

modifiedBy contains the ID of the user who applied the most recent edit to the item.

Example: 3658432978520043388

---

connectorIds?

readonly Array<string>

connectorIds is an array that contains the ids of the connectors attached to the current item.

ℹ️ Note: Items of type tag and frame do not support the connectorIds property.

Methods

sync(...)

() => Promise<void>

🔒 Requires scope: boards:write

sync propagates to the board any changes to item and tag properties.
After updating the properties of an item or a tag, sync it with the board to:

• Propagate to the board the changes applied to the item or to the tag.
• Make the changes visible on the board.

All board items and tags require sync to make any changes to their properties visible on the board.

For more information and examples, see Update and sync item properties.

Example:
(The code example updates a text item using sync.
The same mechanism applies to and works in the same way for all supported board items.)

// Create an item.
// In this case, a text item.
const text = await miro.board.createText({
  content: '<p>This is a piece of text to remind me that I always finish what I ...</p>',
  style: {
    fillColor: 'transparent',
    textAlign: 'left',
  },
  x: 0,
  y: 0,
  width: 450,
  rotation: 0.0,
});

// Update the board item by modifying the values of its properties.
// In the text item case, the updated properties modify content, background color, and rotation of the item.
text.content = 'A fourteneer is "A line that rumbles on like this for being a bit too long."';
text.style.fillColor = '#a9fe65';
text.rotation = 180.0;

// Call 'sync' to make the changed board item properties visible on the board.
await text.sync();

// Output the updated board item to the developer console.
console.log(text);

Example:
(The code example updates a tag using sync.
The same mechanism applies to and works in the same way for all supported board items.)

// Create a tag.
const todo = await miro.board.createTag({
  title: 'todo',
  color: 'yellow',
});

// Create a sticky note and attach the tag to it.
const stickyNote = await miro.board.createStickyNote({
  content: 'sticky note with tag: "todo"',
  tagIds: [todo.id],
});
console.log(stickyNote.tagIds); // => ['3074457345627244742']

// Update the tag properties: title and color.
todo.title = "won't fix";
todo.color = 'green';

// Call 'sync' to make the changed tag properties visible on the board.
await todo.sync();

// Output the updated tag to the developer console.
console.log(todo);

---

getMetadata(...)

(key?: string) => Promise<T>

🔒 Requires scope: boards:read

🚦 Rate limit: Level 1

Fetches board item metadata, stored per app, for the specified metadata key.
The response contains the metadata value assigned to the requested key.

To fetch all the metadata for a board item, invoke the method without passing any arguments.
The response contains all the metadata associated with the board item as key/value pairs.

An app can access only the metadata that it sets.
It cannot access metadata set by other apps.

getMetadata and setMetadata are available for the following board items:

• Card
• Connector
• Embed
• Image
• Preview
• Shape
• Sticky note
• Text

The methods aren't available for the following board items:

• Frames
• Unsupported board items
• groups

ℹ️ Note:

• To access board item metadata, apps require the boards:read permission.
• To store board item metadata, apps require the boards:write permission.
• getMetadata returns a new object, not a reference to the object that was previously set with setMetadata.
• If the specified key isn't found, the method returns undefined.

⚠️ Warning:

• Total ItemMetadata storage limit: 6 KB per item.

Example:

// Get the board item you want to retrieve metadata from.
const [geoCard] = await miro.board.get({type: 'card'});

// Set item metadata for an imaginary geocaching game, and store it to the retrieved card item.
await geoCard.setMetadata('leaderboard', ['Ziltoid', 'Howard', 'Paul']);

// Get the specific 'leaderboard' metadata from the card item.
const leaderboard = await geoCard.getMetadata('leaderboard');

// Get all the metadata from the card item by passing no arguments.
await geoCard.getMetadata();

---

setMetadata(...)

(key: string, value?: title="Json">Json) => Promise<T>

🔒 Requires scope: boards:write

Adds board item metadata to make it available on the board that the app runs on.
An app can access only the board item metadata that it sets.
It cannot access metadata set by other apps.

Board item metadata is stored in the item it refers to. Therefore:

• When duplicating an item, the metadata is copied to the new item.
• When deleting an item, the corresponding metadata is removed with the deleted item.

Board item metadata is synced across, and available to, all the users who can:

• Access and view the board that the app is running on, AND
• Run the app on the board.

ItemMetadata is a key/value-pair object. It can contain values with the following data types:

• string
• number
• boolean
• Object
• Array
• null
• undefined

getMetadata and setMetadata are available for the following board items:

• Card
• Connector
• Embed
• Image
• Preview
• Shape
• Sticky note
• Text

The methods aren't available for the following board items:

• Frames
• Unsupported board items
• groups

To overwrite an existing key inside ItemMetadata:

• Pass the same key multiple times with different values. Only the last/most recent value is stored with the key.

To remove a key from ItemMetadata:

• Set the value of the existing key to either null, or undefined.
  This clears the key. If you call getMetadata(key) to retrieve a key that has been set to null or undefined, the method returns undefined.

ℹ️ Note:

• To access board item metadata, apps require the boards:read permission.
• To store board item metadata, apps require the boards:write permission.
• You can assign an empty array ([]) to a key. It's returned as an empty array.
• You can assign an empty string ('') to a key. It's returned as an empty string.

⚠️ Warning:

• Total ItemMetadata storage limit: 6 KB per item.

Example:

// Get the board item you want to set metadata to.
const [geoCard] = await miro.board.get({type: 'card'});

// Set item metadata for an imaginary geocaching game, and store it to the retrieved card item.
await geoCard.setMetadata('geoData', {
  name: 'null',
  coordinates: {
    latitude: '33.950278',
    longitude: '-105.314167',
  },
  lastFound: '1947-07-08',
  content: true,
  difficulty: 5,
  keywords: ['x-files', 'truth-is-out-there', 'area-51', 'roswell', 'aliens'],
  geoCache: [
    {
      name: 'UFO',
      description: 'Severely damaged unidentified flying object. ',
    },
    {
      name: 'Alien',
      description: 'Remains of an alien life form.',
    },
    {
      name: 'Artifacts',
      description: 'Tools, equipment, and other items found at the crash site.',
    },
    {
      name: 'Edibles',
      description: 'The alien was likely as high as a kite when they crashed. Typical.',
    },
  ],
});

// Get the specific 'geoData' metadata from the card item.
// The response contains the metadata value assigned to the key.
const geoCardGeoData = await geoCard.getMetadata('geoData');

// Get all the metadata from the card item.
// The response contains all the metadata assigned to the board item as key/value pairs.
const geoCardAllMetaData = await geoCard.getMetadata();

// Clear the metadata about the imaginary geocaching game in one of the following ways:
// 1. Assign 'geoData' an empty object.
await miro.board.setMetadata('geoData', {});
// 2. Set 'geoData' to 'undefined'.
await miro.board.setMetadata('geoData', undefined);
// 3. Set 'geoData' to 'null'.
await miro.board.setMetadata('geoData', null);

---

goToLink(...)

() => Promise<boolean>

🔒 Requires scope: boards:read

goToLink navigates to the provided link associated with the item on a board.

For links that point to another item on the same board, the viewport will automatically move to that item when true is returned.

For links that point to an item on a separate board or an external url, a new tab tab will be opened.

Returns:

Promise<boolean>

• true: Link is successfully associated with the item, navigation is triggered, and the linkedTo property contains a valid value.
• false: Link is not successfully associated to the item due to an invalid or missing linkedTo property, and no navigation is triggered.

Example:

const [geoCard] = await miro.board.get({type: 'card'});

// Link item to some url
geoCard.linkedTo = 'https://google.com';

// Update widget props and apply changes
await geoCard.sync();

// Navigate to https://google.com (value of `linkedTo` property)
await geoCard.goToLink();

---

bringToFront(...)

() => Promise<void>

🔒 Requires scope: boards:write

🚦 Rate limit: Level 1

In a stack of items, this method brings an item to the front so that it is at the top of the stack.
When the item is at the front, it is fully visible; The item can partially or completely hide underlying items in the same stack.

ℹ️ Note:

• Frame items don't support the bringToFront() method.
  As a frame item acts as a parent that can contain other items, a frame item is always at the back, relative to any other items on the board.
  The only object behind a frame is the board itself.

Example:

// Create three sticky notes
const first = await miro.board.createStickyNote({
  content: 'first',
});

const second = await miro.board.createStickyNote({
  content: 'second',
});

const third = await miro.board.createStickyNote({
  content: 'third',
});

// Bring the first sticky note to the front of the board.
await first.bringToFront();

---

sendToBack(...)

() => Promise<void>

🔒 Requires scope: boards:write

🚦 Rate limit: Level 1

In a stack of items, it sends an item to the back so that it is at the bottom of the stack.
When it is at the back, item is partially or completely hidden by overlying items in the same stack.

ℹ️ Note:

• Frame items don't support the sendToBack() method.
  As a frame item acts as a parent that can contain other items, a frame item is always at the back, relative to any other items on the board.
  The only object behind a frame is the board itself.

Example:

// Create three sticky notes
const first = await miro.board.createStickyNote({
  content: 'first',
});

const second = await miro.board.createStickyNote({
  content: 'second',
});

const third = await miro.board.createStickyNote({
  content: 'third',
});

// Send the third sticky note to the back of the board
await third.sendToBack();

---

bringInFrontOf(...)

(target: BaseMixin) => Promise<void>

🔒 Requires scope: boards:write

🚦 Rate limit: Level 1

In a stack of items, this method sends an item in front of another item (target).
When an item is moved to the front, the item can partially or completely hide underlying items in the same stack.

ℹ️ Note:

• As this method implements relative positioning, you can use this method to place items in front or behind other items.
  If you want to send an item all the way to the front,
  you can use the method bringToFront(), which places the item at the top of the stack.
• Frame items don't support the bringInFrontOf() method.
  As a frame item acts as a parent that can contain other items, a frame item is always at the back, relative to any other items on the board.
  The only object behind a frame is the board itself.

Example:

// Create three sticky notes
const first = await miro.board.createStickyNote({
  content: 'first',
});

const second = await miro.board.createStickyNote({
  content: 'second',
});

const third = await miro.board.createStickyNote({
  content: 'third',
});

// Bring the first sticky note in front of second.
await first.bringInFrontOf(second);

---

sendBehindOf(...)

(target: BaseMixin) => Promise<void>

🔒 Requires scope: boards:write

🚦 Rate limit: Level 1

In a stack of items, this method sends an item behind another item (target).
When an item is moved to the back, the item can be partially or completely hidden by the overlying items in the top of the same stack.

ℹ️ Note:

• As this method implements relative positioning, you can use this method to place items in front or behind other items.
  If you want to send an item all the way to the back,
  you can use the method sendToBack(), which places the item at the bottom of the stack.
• Frame items don't support the sendBehindOf() method.
  As a frame item acts as a parent that can contain other items, a frame item is always at the back, relative to any other items on the board.
  The only object behind a frame is the board itself.

Example:

// Create three sticky notes
const first = await miro.board.createStickyNote({
  content: 'first',
});

const second = await miro.board.createStickyNote({
  content: 'second',
});

const third = await miro.board.createStickyNote({
  content: 'third',
});

// Send the third sticky note behind the second one
await third.sendBehindOf(second);

---

getLayerIndex(...)

() => Promise<number>

🔒 Requires scope: boards:read

The getLayerIndex() method returns the position of an item in the item stack.

Items in a stack are layered on top of each other based on their layer index value. An item with a higher layer index appears above items with lower layer index values.

Each item on the board has a layer index position in the stack. The higher the layer index value, the "closer" to the user the item appears.

For example, with three items on the board - first, second, and third - their initial layer index values might be:
first[0], second[1], third[2].

The item with layerIndex === 2 (third) will be fully visible at the top of the stack. The item with layerIndex === 1 (second) may be partially hidden by the item above it. And the item with layerIndex === 0 (first) may be fully hidden by the items above it.

Returns:

• Promise<number> - calling getLayerIndex() allows you get the position of a specific item in the stack.

ℹ️ Note:

• The item stack is zero indexed.
• Frame items don't support the getLayerIndex() method.
  As a frame item acts as a parent that can contain other items, a frame item is always at the back, relative to any other items on the board.
  The only object behind a frame is the board itself.

Example:

// Create three sticky notes.
// Sticky notes are created on top of each other in the creation order, with the layer index equal to the creation index.
const first = await miro.board.createStickyNote({
  content: 'first',
});

const second = await miro.board.createStickyNote({
  content: 'second',
});

const third = await miro.board.createStickyNote({
  content: 'third',
});

await third.getLayerIndex(); // returns 2

---

getConnectors(...)

() => Promise<Array<Connector>>

🔒 Requires scope: boards:read

🚦 Rate limit: Level 3

The getConnectors() method returns an array of connector items attached to the current item. The connectors returned correspond to the ids in the connectorIds property of the item.

Example:

// Create two sticky notes linked by a connector.
const startItem = await miro.board.createStickyNote({
  content: 'start',
});

const endItem = await miro.board.createStickyNote({
  content: 'end',
  x: 500,
});

const connector = await miro.board.createConnector({
  start: {
    item: startItem.id,
  },
  end: {
    item: endItem.id,
  },
});

// sync() updates the connectorIds property in startItem
await startItem.sync();

const connectors = await startItem.getConnectors(); // returns [connector]

All properties

Property	Type
connectorIds?	readonly Array<string>
content	string
createdAt	readonly string
createdBy	readonly string
groupId?	readonly string
height	number
id	readonly string
linkedTo?	string
modifiedAt	readonly string
modifiedBy	readonly string
origin	'center'
parentId	readonly 'null' | string
relativeTo	'canvas_center' | 'parent_top_left' | 'parent_center'
shape	'square' | 'rectangle'
style	{ fillColor: 'red' | StickyNoteColor | 'gray' | 'light_yellow' | 'yellow' | '...' textAlign: 'left' | 'center' | 'right' textAlignVertical: 'top' | 'middle' | 'bottom' }
tagIds	Array<string>
type	readonly 'sticky_note'
width	number
x	number
y	number
bringInFrontOf(...)	(target: BaseMixin) => Promise<void>
bringToFront(...)	() => Promise<void>
getConnectors(...)	() => Promise<Array<Connector>>
getLayerIndex(...)	() => Promise<number>
getMetadata(...)	(key?: string) => Promise<T>
goToLink(...)	() => Promise<boolean>
sendBehindOf(...)	(target: BaseMixin) => Promise<void>
sendToBack(...)	() => Promise<void>
setMetadata(...)	(key: string, value?: title="Json">Json) => Promise<T>
sync(...)	() => Promise<void>