in scrooge-generator/src/main/scala/com/twitter/scrooge/backend/CocoaGenerator.scala [69:84]
def getFieldNSCoderMethod(f: Field, isDecode: Boolean = false): String = {
val prefix = if (isDecode) "decode" else "encode"
val suffix = if (isDecode) "ForKey" else ""
val code = f.fieldType match {
case TBool => "Bool"
case TByte => "Int32"
case TI16 => "Int32"
case TI32 => "Int32"
case TI64 => "Int64"
case TDouble => "Double"
case TBinary => "DataObject"
case EnumType(_, _) => "Int32"
case _ => "Object"
}
prefix + code + suffix
}