def METHOD_NAME(self) -> list[CacheStat]:
    """Returns a list of stats in bytes for the cache memory storage per item"""
    stats = []
    with self._mem_cache_lock:
        for item in self._mem_cache.values():
            stats.append(
                CacheStat(
                    category_name="st_cache_data",
                    cache_name=self.function_display_name,
                    byte_length=len(item),
                )
            )
    return stats