## add(document_field_name, Data_Source_field_name) {#str_str} Adds a new field mapping. ```python def add(self, document_field_name: str, Data_Source_field_name: str): ... ``` | Parameter | Type |......add(document_field_name, data_source_field_name) {#str_str} Adds...document_field_name: str, data_source_field_name: str): ... ```...