code: func NewNoOpV4EventParser(
  	eventType mysql_proto.LogEventType_Type,
  	fixedLengthDataSize int) V4EventParser {
  
  	return &noOpV4EventParser{
  		eventType:           eventType,
  		fixedLengthDataSize: fixedLengthDataSize,
  	}
  }
docs: // NewNoOpV4EventParser returns are parser which does nothing (except setting
  // the fixed length data size when used in conjunction with
  // ParsedV4EventReader).  This is mainly used for testing and FDE validation.