1. @DomName('WebGL2RenderingContext.framebufferTextureLayer')
  2. @DocsEditable()
  3. @Experimental()
void framebufferTextureLayer(int target, int attachment, Texture texture, int level, int layer)

Source 

@DomName('WebGL2RenderingContext.framebufferTextureLayer')
@DocsEditable()
@Experimental() // untriaged
void framebufferTextureLayer(
        int target, int attachment, Texture texture, int level, int layer) =>
    _blink.BlinkWebGL2RenderingContext.instance
        .framebufferTextureLayer_Callback_5_(
            this, target, attachment, texture, level, layer);