code: def _fake_closeenumeration(self, namespace, **params):
          
          self._validate_namespace(namespace)
  
          context_id = params['EnumerationContext']
  
          try:
              context_data = self.enumeration_contexts[context_id]
          except KeyError:
              raise CIMError(
                  CIM_ERR_INVALID_ENUMERATION_CONTEXT,
                  _format("EnumerationContext {0!A} not found in mock server "
                          "enumeration contexts.", context_id))
  
          # This is probably relatively useless because pywbem handles
          # namespace internally but it could catch an error if user plays
          # with the context.
          if context_data['namespace'] != namespace:
              raise CIMError(
                  CIM_ERR_INVALID_NAMESPACE,
                  _format("Invalid namespace {0!A} for CloseEnumeration {1!A}",
                          namespace, context_id))
  
          del self.enumeration_contexts[context_id]
docs: Implements WBEM server responder for
              :meth:`~pywbem.WBEMConnection.CloseEnumeration`
              with data from the instance repository.
  
              If the EnumerationContext is valid it removes it from the
              context repository. Otherwise it returns an exception.