code: func (f *FileLogger) V(level int32) VerboseLogger {
  	// Is the loglevel set verbose enough to accept the forthcoming log statement
  	if log.V(log.Level(level)) {
  		return f
  	}
  	// Otherwise discard
  	return None
  }
docs: // V will returns a logger which will discard output if the specified level is greater than the current logging level.