Optional layers: M[]Readonly $$isProtected featureCan featureGroup be removed?
Readonly indexReadonly interactiveProtected isReadonly itemkey to item.
Readonly itemsReadonly modeReadonly mountedset it True, the follow emit will be ignore and then set it False.
Readonly rootProtected _addProtected _clearProtected _removeOptional payload: PlainObjectsplit fire
Optional payload: PlainObjectCreate parent-child relationships of two evented objects manually. Because this method not mounted on evented object.
Optional off: booleanGenerated using TypeDoc
The parent of event.
List is a parent of Base or Layer.
This field has the name $$parent declared, which keep consistent with /model/basic/Base.class