def _load_schemas_and_validators():
    """Load all default schemas into `_SCHEMAS`."""
    schema_base_path = os.path.join(os.path.dirname(__file__), '../..')
    for name, path in _DEFAULT_SCHEMA_PATHS.items():
        _load_schema(os.path.join(schema_base_path, path), name)
        _get_validator(name)
Load all default schemas into `_SCHEMAS`.