code: def validateMemberName(n):
      
      try:
          if len(n) < 1:
              raise Exception('Name must be at least one byte in length')
          if len(n) > 255:
              raise Exception('Name exceeds maximum length of 255')
          if n[0].isdigit():
              raise Exception('Names may not begin with a digit')
          if mbr_re.search(n):
              raise Exception(
                  'Names contains a character outside the set [A-Za-z0-9_]')
      except Exception as e:
          raise MarshallingError('Invalid member name "%s": %s' % (n, str(e)))
docs: Verifies that the supplied name is a valid DBus member name. Throws
      an L{error.MarshallingError} if the format is invalid
  
      @type n: C{string}
      @param n: A DBus member name