XML "extends" does not extend "effect_group" but can you extend this as well?

[Zeruel87]

Hello,

first post in this forum, first post and first question

I'am experimenting with the XML files and try myself in modding.

When using "extends" on for example a Pistol, it seems everything except the "effect_group" and the "passive_effect" entries that are beneath it are extended.

Question: is there a way to also extend a effect_group?