*
     * N.B. Even if the [wholeQualifierElement] is not strictly in the [selection],
     * some outer part of it might be, and we want to shorten that.
     * So we have to check all the outer qualifiers.
     */
    private fun findClassifierQualifierToShorten(
        wholeQualifierClassId: ClassId,
        wholeQualifierElement: KtElement,

     * provided, an empty map is returned defensively so that [toTypeArgumentsMapping] doesn't conjure any error types. If you want to map
     * too few type arguments meaningfully, please provide filler types explicitly.
     */
    private fun toTypeArgumentsMapping(
        typeArguments: List<FirTypeProjection>,