Called before parsing content. Push the class name onto the class name
        stack. Used to construct the full name for members.

def before_content(self):
        """Called before parsing content. Push the class name onto the class name
        stack. Used to construct the full name for members.
        """
        ChapelObject.before_content(self)
        if self.names:
            self.env.temp_data['chpl:class'] = self.names[0][0]
            self.clsname_set = True