public static _Fields findByThriftId(int fieldId){
switch (fieldId) {
case 1:
    return STRING_THING;
case 4:
  return BYTE_THING;
case 9:
return I32_THING;
case 11:
return I64_THING;
default :
return null;
}
}

public static _Fields findByThriftId ( int fieldId ) { switch ( fieldId ) { case 1 : return STRING_THING ; case 4 : return BYTE_THING ; case 9 : return I32_THING ; case 11 : return I64_THING ; default : return null ; } }
find the _fields constant that matches fieldid , or null if its not found .
