def addClass(self, alias, klass):
        """
        Creates a reference to C{class_def}.

        @param alias: C{ClassDefinition} instance.
        """
        ref = self.class_idx

        self.class_ref[ref] = alias
        cd = self.classes[klass] = alias

        cd.reference = ref

        self.class_idx += 1

        return ref
def addClass ( self , alias , klass ) : ref = self . class_idx self . class_ref [ ref ] = alias cd = self . classes [ klass ] = alias cd . reference = ref self . class_idx += 1 return ref
Creates a reference to C{class_def}.

        @param alias: C{ClassDefinition} instance.