Elements Common API
All elements have the next common API.
Get Id
Returns element id (UUID value).
Get type
Returns element type.
Get content type
Returns element content type.
Get custom fields
Returns element custom fields as JsonObject
.
Get duration
Returns element duration in seconds.
Get published time
Returns time element was published as UNIX time in seconds.
Has fixed duration
Returns true if element has fixed duration.
Register callback
Register callback to listen to element changes.
Get state
Returns current state of element.
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