class_docstr: Domain for citations.
class_docstr_tok: ["Domain","for","citations","."]
code: def resolve_any_xref(
      self,
      env: BuildEnvironment,
      fromdocname: str,
      builder: Builder,
      target: str,
      node: pending_xref,
      contnode: Element,
  ) -> list[tuple[str, Element]]:
      refnode = self.resolve_xref(
          env, fromdocname, builder, "ref", target, node, contnode
      )
      if refnode is None:
          return []
      else:
          return [("ref", refnode)]
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Any, cast
  from docutils import nodes
  from sphinx.addnodes import pending_xref
  from sphinx.domains import Domain
  from sphinx.locale import __
  from sphinx.transforms import SphinxTransform
  from sphinx.util import logging
  from sphinx.util.nodes import copy_source_info, make_refnode
label_desc: Use image node_id 9 for calling the CitationDomain obj's underlying member method code with example usage: obj.resolve_any_xref(env, fromdocname, builder, target, node, contnode) and returns: list, list