ConnectApi.CanvasCapability

If a feed element has this capability, it renders a canvas app.

Property Name	Type	Description	Available Version
`description`	String	A description of the canvas app. The maximum size is 255 characters.	32.0
`developerName`	String	The API name (developer name) of the connected app.	32.0
`height`	String	The height of the canvas app in pixels.	32.0
`icon`	`ConnectApi.Icon`	The icon for the canvas app.	32.0
`namespacePrefix`	String	A unique namespace prefix for the canvas app.	32.0
`parameters`	String	JSON parameters passed to the canvas app.	32.0
`thumbnailUrl`	String	A thumbnail URL to a preview image. The maximum thumbnail size is 120 pixels by 120 pixels.	32.0
`title`	String	A title for the canvas link.	32.0

Apex Reference Guide