code: private void decreaseIndent() throws IOException
     {
        if (m_pretty)
        {
           m_writer.write('\n');
           m_indent = m_indent.substring(0, m_indent.length() - INDENT.length());
           m_writer.write(m_indent);
        }
        m_firstNameValuePair.pop();
     }
docs: Decrease the indent level.