def _purge_old_document_images(app: Sphinx, env: BuildEnvironment, docname: str):
img_registry: DocFilesPurgatory = getattr(env, "graphtik_image_purgatory", None)
if img_registry:
try:
env.graphtik_image_purgatory.purge_doc(docname)
except Exception as ex:
app.logger.error(
bold(__("Failed purging old images due to: %s")), ex, exc_info=ex
)
else:
env.graphtik_image_purgatory = DocFilesPurgatory()
