(self, name, filter)
return self
:param name: filter name
        :param filter: filter body
:param name: filter name
        :param filter: filter body
: param name : filter name : param filter : filter body
def add_filter(self, name, filter):
        """
        :param name: filter name
        :param filter: filter body
        """
        self.body["filters"][name] = filter
        return self
def add_filter ( self , name , filter ) : self . body [ "filters" ] [ name ] = filter return self