1. DomName('CompositorProxy.supports')
  2. DocsEditable()
  3. Experimental()
bool supports(String attribute)

Source 

@DomName('CompositorProxy.supports')
@DocsEditable()
@Experimental() // untriaged
bool supports(String attribute) => _blink.BlinkCompositorProxy.instance.supports_Callback_1_(this, attribute);