public static void registerFieldPrefix(final String prefix){
  if (prefix != null && prefix.length() > 0) {
    fieldPrefixes.add(prefix);
  }
}

public static void registerFieldPrefix ( final String prefix ) { if ( prefix != null && prefix . length ( ) > 0 ) { fieldPrefixes . add ( prefix ) ; } }
if your fields are prefixed with some pre - defined string register them here . you can register more than one prefix .
