QCameraExposure::FlashTorch not usable on Symbian

QCameraExposure::FlashTorch. When setting this mode on devices whose cameras are capable of constant flash (X6, C7), "Requested flash mode is not supported" printout is displayed. Also when requesting IsFlashModeSupported() with FlashTorch result is given as not supported (though it's possible to turn into this mode using Symbian C++ approach).