68        return exporter_cls
69
70    class CustomKeyExporter(exporter_cls):
71        """Exporter class with overridden storage_class to a class with overridden custom key separator."""72
73        storage_class = store_class_custom_key_separator_wrapper(
74            exporter_cls.storage_class, key_separator

60def exporter_custom_key_separator_wrapper(
61    exporter_cls: type[BaseExporter], key_separator: str
62):
63    """Create class deriving from exporter class with overridden key separator if exporter class derives from JSONExporter."""64    if (
65        not issubclass(exporter_cls, JSONExporter)
66        or key_separator == DEFAULT_KEY_SEPARATOR

47        KEY_SEPARATOR = key_separator
48
49    class CustomKeySeparatorFileFormat(file_format_cls):
50        """File format class with overridden loader and unit class to a classes with overridden custom key separator."""51
52        loader = store_class_custom_key_separator_wrapper(
53            file_format_cls.get_class(), key_separator

34def file_format_custom_key_separator_wrapper(
35    file_format_cls: type[TranslationFormat], key_separator: str
36):
37    """Create class deriving from file format class with overridden key separator if file format class derives from JSONFormat."""38    if (
39        not issubclass(file_format_cls, JSONFormat)
40        or key_separator == DEFAULT_KEY_SEPARATOR