docs: def tracefunc_xml(func):
      """
      Causes output of function to be printed in an XML style block
      """
      funcname = meta_util_six.get_funcname(func)
      def wrp_tracefunc2(*args, **kwargs):
          verbose = kwargs.get('verbose', True)
          if verbose:
              print('<%s>' % (funcname,))
          with util_print.Indenter('    '):
              ret = func(*args, **kwargs)
          if verbose:
              print('</%s>' % (funcname,))
          return ret
      wrp_tracefunc2_ = ignores_exc_tb(wrp_tracefunc2)
      wrp_tracefunc2_ = preserve_sig(wrp_tracefunc2_, func)
      return wrp_tracefunc2_