async def METHOD_NAME(self, user_id: int) -> list[StorageFileMetaData]:
    """Lists metadata of all s3 objects name as api/* from a given user"""
    # search_files_starting_with
    response = await self.client.post(
        "/simcore-s3/files/metadata:search",
        params={
            "user_id": str(user_id),
            "startswith": "api/",
        },
    )
    response.raise_for_status()
    files_metadata = FileMetaDataArray(__root__=response.json()["data"] or [])
    files: list[StorageFileMetaData] = files_metadata.__root__
    return files