conn = getConnection(env, conn);
if (conn == null) conn = getConnection(env);
  public boolean mysql_create_db(Env env,                                 String name,                                 @Optional Mysqli conn)    throws SQLException  {    conn = getConnection(env, conn);    Statement stmt = null;    if (conn == null)      return false;    try {      stmt = conn.validateConnection().getConnection().createStatement();      stmt.executeUpdate("CREATE DATABASE " + name);    } finally {      if (stmt != null)        stmt.close();    }    return true;  }