code: def xpathContextSetCache(self, active, value, options):
          
          ret = libxml2mod.xmlXPathContextSetCache(self._o, active, value, options)
          return ret
docs: Creates/frees an object cache on the XPath context. If
            activates XPath objects (xmlXPathObject) will be cached
            internally to be reused. @options: 0: This will set the
            XPath object caching: @value: This will set the maximum
            number of XPath objects to be cached per slot There are 5
            slots for: node-set, string, number, boolean, and misc
            objects. Use <0 for the default number (100). Other values
             for @options have currently no effect.