How proxy get Field Value from stub

[nekum109]

How does proxy getFieldValue from stub below are the functions which are generated
COMMONAPI_EXPORT virtual void onRemoteFieldDataAttributeChanged() {
assert(defaultStub_ !=NULL);
defaultStub_->onRemoteFieldDataAttributeChanged();
}

COMMONAPI_EXPORT virtual bool onRemoteSetFieldDataAttribute(::v1::stla::wrapper::Types::sFields_GroupType _value) {
    assert(defaultStub_ !=NULL);
    return defaultStub_->trySetFieldDataAttribute(std::move(_value));
}

COMMONAPI_EXPORT virtual bool onRemoteSetFieldDataAttribute(const std::shared_ptr<CommonAPI::ClientId> _client, ::v1::stla::wrapper::Types::sFields_GroupType _value) {
    (void)_client;
    return onRemoteSetFieldDataAttribute(_value);
}