code: def result_nodes(
      self,
      document: nodes.document,
      env: BuildEnvironment,
      node: Element,
      is_ref: bool,
  ) -> tuple[list[Node], list[system_message]]:
      node["refdomain"] = "math"
      return [node], []
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Any
  from docutils import nodes
  from docutils.nodes import Element, Node, make_id, system_message
  from sphinx.domains import Domain
  from sphinx.locale import __
  from sphinx.roles import XRefRole
  from sphinx.util import logging
  from sphinx.util.nodes import make_refnode
label_desc: Use image node_id 1 for calling the MathReferenceRole obj's underlying member method code with example usage: obj.result_nodes(document, env, node, is_ref) and returns: list,  list