Player constructor
Implementation
Player(Map<String, dynamic> wrapped,
    {MSchemaRef mtype = PlayerRef, bool update = true })
    : super(wrapped, mtype: mtype, update: false) {
  if(update == true) takeFromMap(wrapped, copyEntries: false);
}
Player(Map<String, dynamic> wrapped,
    {MSchemaRef mtype = PlayerRef, bool update = true })
    : super(wrapped, mtype: mtype, update: false) {
  if(update == true) takeFromMap(wrapped, copyEntries: false);
}