get full file names with the given suffixes in the given directory

        Args:
            dir_src: directory path
            suffixes: wanted suffixes

        Returns:
            full file names with the given suffixes as list

def get_full_filename_by_suffixes(dir_src, suffixes):
        # type: (AnyStr, Union[AnyStr, List[AnyStr]]) -> Optional[List[AnyStr]]
        """get full file names with the given suffixes in the given directory

        Args:
            dir_src: directory path
            suffixes: wanted suffixes

        Returns:
            full file names with the given suffixes as list
        """
        file_names = FileClass.get_filename_by_suffixes(dir_src, suffixes)
        if file_names is None:
            return None
        return list(dir_src + os.sep + name for name in file_names)