public Optional<Field> checkInputEncrypt(Field field) throws StageException {
    if (UNSUPPORTED_TYPES.contains(field.getType())) {
      throw new StageException(CRYPTO_03, field.getType());
    }
    return Optional.of(field);
  }
public Optional < Field > checkInputEncrypt ( Field field ) throws StageException { if ( UNSUPPORTED_TYPES . contains ( field . getType ( ) ) ) { throw new StageException ( CRYPTO_03 , field . getType ( ) ) ; } return Optional . of ( field ) ; }
Checks that the encryption input is a supported type, otherwise sends the
record to StageException.

@param field {@link Field}
@return empty {@link Optional} if the record was sent to error