Impossible to deploy custom Qt plugins on Android correctly

I use the QtC, and I want to create and use e.g. a custom Qt positioning plugin. So, I have created a simple project (please see in attachment). This works perfectly, e.g. on Windows, but on Android, this my plugin does not loaded.

Content of plugin pro-file are following:

include(../positionplugin.pri)

QT += positioning
TEMPLATE = lib
CONFIG += plugin
CONFIG -= app_bundle
DESTDIR = $$top_builddir/deploy-apps/apps/position

SOURCES += \
    fakegeopositioninfosource.cpp \
    fakegeopositioninfosourcefactory.cpp

HEADERS += \
    fakegeopositioninfosource.h \
    fakegeopositioninfosourcefactory.h

OTHER_FILES += \
    plugin.json

ANDROID_EXTRA_PLUGINS += $$top_builddir/deploy-apps/apps/position

and the positionplugin.pri file are following:

include(../../common.pri)

QT += positioning
TEMPLATE = lib
CONFIG += plugin link_prl
CONFIG -= app_bundle
DESTDIR = $$top_builddir/deploy-apps/apps/positioner

and the common.pri file are following:

TARGET = $$qtLibraryTarget($$TARGET)
DEFINES += QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_ASCII QT_STRICT_ITERATORS
CONFIG += c++14
CONFIG(debug, debug|release):OBJECTS_DIR = debug
CONFIG(release, debug|release):OBJECTS_DIR = release

So, at compilation, my binary files (as an application, and as an plugin) are copies into:

<shadow build dir>/deploy-apps/apps/libapp.so
<shadow build dir>/deploy-apps/position/libfakeposition.so

And next, when the APK creates, I see, that my plugin is in:

<shadow build dir>/android-build/libs/armeabi-v7a/libfakeposition.so

But, I also see, that all Qt-plugins in "android-build/libs/armeabi-v7a" directory now has a name's like "libplugins_<plugin type>_<plugin name>".

So, I assume, that my plugin in "android-build/libs/armeabi-v7a" should contains a similar name: "libplugins_position_libfakeposition.so", but this does not happens.

Also, I see that the "<shadow build dir>/android-build/res/values/libs.xml" file does not contain an entry about my plugin.

I have read that I need to use the ANDROID_EXTRA_PLUGINS property in my plugin's pro file: http://doc.qt.io/qt-5/deployment-android.html

but it has not any effect.

PS: Also I have read this, https://stackoverflow.com/questions/47061829/how-to-deploy-qt-imageformats-plugins-on-android but it does not help too.