code: def evaluate(self, expression, processorNss=None):
          '''expression -- XPath compiled expression
          '''
          from Ft.Xml import XPath
          if not processorNss:
              context = XPath.Context.Context(self.node, processorNss=self.processorNss)
          else:
              context = XPath.Context.Context(self.node, processorNss=processorNss)
          nodes = expression.evaluate(context)
          return map(lambda node: ElementProxy(self.sw,node), nodesf evaluate(self, expression, processorNss=None):
          '''expression -- XPath compiled expression
          '''
          from Ft.Xml import XPath
          if not processorNss:
              context = XPath.Context.Context(self.node, processorNss=self.processorNss)
          else:
              context = XPath.Context.Context(self.node, processorNss=processorNss)
          nodes = expression.evaluate(context)
          return map(lambda node: ElementProxy(self.sw,node), nodes)
docs: expression -- XPath compiled expression