def METHOD_NAME() -> None:
    project1 = Project()
    project2 = Project()
    session1 = Session(project1)
    session2 = Session(project2)
    project1.add_sessions(session1)
    project1.add_sessions(session2)
    assert len(project1.sessions) == 2
    assert session2.label == project1.sessions[1].label
    assert session1.label == project1.sessions[0].label