code: func (c *Debugger) StepInto(breakOnAsyncCall bool) (*gcdmessage.ChromeResponse, error) {
  	var v DebuggerStepIntoParams
  	v.BreakOnAsyncCall = breakOnAsyncCall
  	return c.StepIntoWithParams(&v)
  }
docs: // StepInto - Steps into the function call.
  // breakOnAsyncCall - Debugger will issue additional Debugger.paused notification if any async task is scheduled before next pause.