@query_params('allow_no_indices', 'expand_wildcards', 'ignore_unavailable',
        'include_defaults', 'local')
    def get_field_mapping(self, fields, index=None, doc_type=None, params=None):
        if fields in SKIP_IN_PATH:
            raise ValueError("Empty value passed for a required argument 'fields'.")
        return self.transport.perform_request('GET', _make_path(index,
            '_mapping', doc_type, 'field', fields), params=params)
Retrieve mapping definition of a specific field.
dataset/ETHPy150Open elastic/elasticsearch-py/elasticsearch/client/indices.py/IndicesClient.get_field_mapping