Merge "MediaHierarchyManager: prevent crash when previousLocation is -1" into tm-dev

     * @return true if this transformation is guided by an external progress like a finger

     */

    private fun isCurrentlyInGuidedTransformation(): Boolean {

        return getTransformationProgress() >= 0

        return hasValidStartAndEndLocations() && getTransformationProgress() >= 0

    }

    private fun hasValidStartAndEndLocations(): Boolean {

        return previousLocation != -1 && desiredLocation != -1

    }

    /**