code: func (c *Profiler) StartPreciseCoverage(callCount bool, detailed bool) (*gcdmessage.ChromeResponse, error) {
  	var v ProfilerStartPreciseCoverageParams
  	v.CallCount = callCount
  	v.Detailed = detailed
  	return c.StartPreciseCoverageWithParams(&v)
  }
docs: // StartPreciseCoverage - Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.
  // callCount - Collect accurate call counts beyond simple 'covered' or 'not covered'.
  // detailed - Collect block-based coverage.