add ability to generate legacy API with legacy naming scheme

regenerate legacy API

pyproject.toml

@@ -5,6 +5,9 @@ DISABLE_ENDING_COMMA_HEURISTIC = false
 COALESCE_BRACKETS = true
 DEDENT_CLOSING_BRACKETS = true
 FORCE_MULTILINE_DICT = false
+INDENT_DICTIONARY_VALUE = true
+SPLIT_BEFORE_DOT = true
+ALLOW_SPLIT_BEFORE_DICT_VALUE = false
 
 [tool.isort]
 multi_line_output = 5