def METHOD_NAME(package_dir=None, should_include=None):
    """
    Return a list of fully-qualified module names in the given package.
    """
    if package_dir is None:
        package_dir = PACKAGE_DIR
    if should_include is None:
        should_include = lambda path: True
    paths = _find_files(package_dir, should_include)
    names = _make_module_names(package_dir, paths)
    names.sort()
    return names