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Added limitations in 'Managing Common Dependencies with Parent Services'... #2502

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4 changes: 4 additions & 0 deletions components/dependency_injection/parentservices.rst
Original file line number Diff line number Diff line change
Expand Up @@ -273,6 +273,10 @@ when the child services are instantiated.
is that omitting the ``parent`` config key will mean that the ``calls``
defined on the ``mail_manager`` service will not be executed when the
child services are instantiated.

.. caution::

``scope``, ``abstract``, ``tags`` attributes are always taken from the child.

The parent service is abstract as it should not be directly retrieved from the
container or passed into another service. It exists merely as a "template" that
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