code: private void closeQuietly(final PreparedStatement preparedStatement) {
          if (preparedStatement != null) {
              try {
                  preparedStatement.close();
              } catch (final SQLException e) {
                  logger.trace("Could not close prepared statement.", e);
              }
          }
      }
docs: Closes a {@link PreparedStatement}, logging a warning if {@link SQLException} is thrown.
  
  @param preparedStatement The prepared statement to close.
  @since 2.1.8