Automatic :noindex: for sub-objects

In my documentation, I list an abridged version of several previously-defined classes. In order to prevent duplicate indexing, I assumed that I would only need one :noindex: for each:

.. class:: State
    :noindex:

    .. attribute:: turn_num
    .. attribute:: our_team
    .. method:: obj_by_coords(coords)

.. class:: Obj
    :noindex:

    .. attribute:: id
    .. attribute:: coords
    .. attribute:: obj_type

...but this produces warnings:

WARNING: duplicate object description of State.our_team, other instance in api, use :noindex: for one of them
WARNING: duplicate object description of State.obj_by_coords, other instance in api, use :noindex: for one of them
etc

The solution is very verbose:

.. class:: State
    :noindex:

    .. attribute:: turn_num
        :noindex:
    .. attribute:: our_team
        :noindex:
    .. method:: obj_by_coords(coords)
        :noindex:

.. class:: Obj
    :noindex:

    .. attribute:: id
        :noindex:
    .. attribute:: coords
        :noindex:
    .. attribute:: obj_type
        :noindex:

It seems to me like it would always make sense to automatically apply :noindex: to all the children of a parent with :noindex:. Am I missing something?

No file, test, or entry point is named in the issue. Start by locating how :noindex: is handled for class, attribute, and method directives, then check existing duplicate-object indexing tests. Done means a parent marked :noindex: suppresses indexing warnings for its documented children without requiring repeated options.