1. DomName('WebGL2RenderingContext.attachShader')
  2. DocsEditable()
  3. Experimental()
void attachShader(Program program, Shader shader)

Source 

@DomName('WebGL2RenderingContext.attachShader')
@DocsEditable()
@Experimental() // untriaged
void attachShader(Program program, Shader shader) => _blink.BlinkWebGL2RenderingContext.instance.attachShader_Callback_2_(this, program, shader);