def METHOD_NAME(mock_storage, text_lines, prefix):  # noqa: F811
    break_at_line = 52
    lines_part_1 = text_lines[:break_at_line]
    lines_part_2 = text_lines[break_at_line:]
    log_file_contents_part_1 = bytes("\n".join(lines_part_1), encoding="utf8")
    key_part_1 = f"{prefix}12345.log"
    mock_storage.set(key_part_1, log_file_contents_part_1)
    log_file_contents_part_2 = bytes("\n".join(lines_part_2), encoding="utf8")
    key_part_2 = f"{prefix}12346.log"
    mock_storage.set(key_part_2, log_file_contents_part_2)
    return prefix