1. DomName('WebGLRenderingContext.bufferSubByteData')
  2. DocsEditable()
void bufferSubByteData(int target, int offset, ByteBuffer data)

Source 

@DomName('WebGLRenderingContext.bufferSubByteData')
@DocsEditable()
void bufferSubByteData(int target, int offset, ByteBuffer data) => _blink.BlinkWebGLRenderingContext.instance.bufferSubData_Callback_3_(unwrap_jso(this), target, offset, data);