code: func (c *Page) CreateIsolatedWorld(frameId string, worldName string, grantUniveralAccess bool) (int, error) {
  	var v PageCreateIsolatedWorldParams
  	v.FrameId = frameId
  	v.WorldName = worldName
  	v.GrantUniveralAccess = grantUniveralAccess
  	return c.CreateIsolatedWorldWithParams(&v)
  }
docs: // CreateIsolatedWorld - Creates an isolated world for the given frame.
  // frameId - Id of the frame in which the isolated world should be created.
  // worldName - An optional name which is reported in the Execution Context.
  // grantUniveralAccess - Whether or not universal access should be granted to the isolated world. This is a powerful option, use with caution.
  // Returns -  executionContextId - Execution context of the isolated world.