>>> session.clear_imports()
>>> len(session.get_imports())
0
>>> session.add_import("tests/resources/test_udf_dir/test_udf_file.py")
>>> len(session.get_imports())
1
>>> session.remove_import("tests/resources/test_udf_dir/test_udf_file.py")
>>> len(session.get_imports())
0