On doctree-resolved, do callbacks

def call_missing_reference(cls, kb_app, sphinx_app: Sphinx,
                               sphinx_env: BuildEnvironment,
                               node,
                               contnode,
                               ):
        """ On doctree-resolved, do callbacks"""

        for callback in EventAction.get_callbacks(kb_app,
                                                  SphinxEvent.MR):
            return callback(kb_app, sphinx_app, sphinx_env, node, contnode)