is KtDotQualifiedExpression -> qualifiedExpressionsWithSelf
            else -> error("Unexpected ${this::class}")
        }

    /**
     * Note: The resulting sequence does not contain non-qualified types!
     *
     * For type `A.B.C.D` it will return sequence of [`A.B.C.D`, `A.B.C`, `A.B`] (**without** `A`).
     */
    private val KtUserType.qualifiedTypesWithSelf: Sequence<KtUserType>

     *
     * If too many type arguments are provided, a mapping is still created. Extra type arguments are simply ignored. If this wasn't the
     * case, the resulting [KtCall] would contain no type arguments at all, which can cause problems later. If too few type arguments are
     * provided, an empty map is returned defensively so that [toTypeArgumentsMapping] doesn't conjure any error types. If you want to map