def METHOD_NAME(osa: OsArch):
    if osa == OsArch.MACOS_X64:
        return "macosx_10_15_x86_64.macosx_11_0_x86_64.whl"
    elif osa == OsArch.LINUX_X64:
        return "manylinux1_x86_64.whl"
    elif osa == OsArch.WINDOWS_X64:
        return "win_amd64.whl"
    else:
        raise ValueError(f"Unsupported OS+arch: {osa.value} for MKL.")