@Optional int fieldNumber)
int fieldNumber)
  public static Value oci_field_type(Env env,                                     @NotNull OracleStatement stmt,                                     @Optional int fieldNumber)  {    try {      if (stmt == null)        return BooleanValue.FALSE;      JdbcResultResource resource = new JdbcResultResource(null, stmt.getResultSet(), null);      return resource.getFieldType(env, fieldNumber);    } catch (Exception ex) {      log.log(Level.FINE, ex.toString(), ex);      return BooleanValue.FALSE;    }  }