问Java：如何修复未检查的强制转换警告？

private HashMap<Class<?>, HashMap<Entity, ? extends Component>> m_componentStores;

public <T extends Component> T getComponent(Entity e, Class<T> exampleClass)
{
    HashMap<Entity, ? extends Component> store = m_componentStores.get(exampleClass);

    T result = (T)store.get(e);

    if (result == null)
    {
        throw new IllegalArgumentException( "GET FAIL: "+e+" does not possess Component of class\nmissing: "+exampleClass );
    }

    return result;
}

Type safety: Unchecked cast from capture#2-of ? extends Component to T