DEPRECATED_LOOKUP = {'import_spacy': 'langchain_community.callbacks.utils', 'import_pandas': 'langchain_community.callbacks.utils', 'import_textstat': 'langchain_community.callbacks.utils', '_flatten_dict': 'langchain_community.callbacks.utils', 'flatten_dict': 'langchain_community.callbacks.utils', 'hash_string': 'langchain_community.callbacks.utils', 'load_json': 'langchain_community.callbacks.utils', 'BaseMetadataCallbackHandler': 'langchain_community.callbacks.utils'}