code: func (c *DOMDebugger) SetXHRBreakpoint(url string) (*gcdmessage.ChromeResponse, error) {
  	var v DOMDebuggerSetXHRBreakpointParams
  	v.Url = url
  	return c.SetXHRBreakpointWithParams(&v)
  }
docs: // SetXHRBreakpoint - Sets breakpoint on XMLHttpRequest.
  // url - Resource URL substring. All XHRs having this substring in the URL will get stopped upon.