code: def validateOneNamespace(self, doc, elem, prefix, ns, value):
          
          if doc is None: doc__o = None
          else: doc__o = doc._o
          if elem is None: elem__o = None
          else: elem__o = elem._o
          if ns is None: ns__o = None
          else: ns__o = ns._o
          ret = libxml2mod.xmlValidateOneNamespace(self._o, doc__o, elem__o, prefix, ns__o, value)
          return ret
docs: Try to validate a single namespace declaration for an
            element basically it does the following checks as described
            by the XML-1.0 recommendation: - [ VC: Attribute Value Type
            ] - [ VC: Fixed Attribute Default ] - [ VC: Entity Name ] -
            [ VC: Name Token ] - [ VC: ID ] - [ VC: IDREF ] - [ VC:
            Entity Name ] - [ VC: Notation Attributes ]  The ID/IDREF
             uniqueness and matching are done separately