I don't need edit godot's code in android studio) And, of course, the game can't be convered to java)) But the android src's may be needed for customizing build result apk. For example, change build.gradle or create android app bundle (*.aab) to optimize size. For now I need put 2 platforms in one apk: arm64-v8a and armeabi-v7a - that make apk size x 2
But the Custom Build or compiling another android template isn't enough for creating aab, because the android template can't be opened in android studio to make ".aab" there.
I need filled or completed template for it, but android export doesn't produce it.
I see a way to fill the Custom Build template by "hands" putting into the template libs, parameters, godo pck in assets and change build.gradle and AndroidManifest.xml
or another way is to modify the GODOT_SRC/godot/platform/android/export/export.cpp which make filling the android template so it save resulting template after filing all sections and parameters