1. DomName('WebGL2RenderingContext.drawArraysInstanced')
  2. DocsEditable()
  3. Experimental()
void drawArraysInstanced(int mode, int first, int count, int instanceCount)

Source 

@DomName('WebGL2RenderingContext.drawArraysInstanced')
@DocsEditable()
@Experimental() // untriaged
void drawArraysInstanced(int mode, int first, int count, int instanceCount) => _blink.BlinkWebGL2RenderingContext.instance.drawArraysInstanced_Callback_4_(this, mode, first, count, instanceCount);