1. DomName('WebGL2RenderingContext.vertexAttribDivisor')
  2. DocsEditable()
  3. Experimental()
void vertexAttribDivisor(int index, int divisor)

Source 

@DomName('WebGL2RenderingContext.vertexAttribDivisor')
@DocsEditable()
@Experimental() // untriaged
void vertexAttribDivisor(int index, int divisor) => _blink.BlinkWebGL2RenderingContext.instance.vertexAttribDivisor_Callback_2_(this, index, divisor);