require(diagnostic is DiagnosticWithParameters1<*, *>)
                @Suppress("UNCHECKED_CAST")
                diagnostic.a as Collection<ResolvedCall<*>>
            }
            in diagnosticWithResolvedCallsAtPosition2 -> {
                require(diagnostic is DiagnosticWithParameters2<*, *, *>)
                @Suppress("UNCHECKED_CAST")
                diagnostic.b as Collection<ResolvedCall<*>>
            }

 * [CallableDescriptor.getOverriddenDescriptors] instead, which is separate from [CallableDescriptor.getOriginal].
 */
@Suppress("UNCHECKED_CAST")
private fun <T : CallableDescriptor> T.unwrapUseSiteSubstitutionOverride(): T {
    var current: CallableDescriptor = this
    while (original != current) {
        current = current.original
    }

            else -> null
        }
    }

    private fun <T> ConstantValueKind<T>.toLiteralExpression(source: KtSourceElement?, value: Any?): FirLiteralExpression<T> =
        @Suppress("UNCHECKED_CAST")
        buildLiteralExpression(source, this, value as T, setType = false)

    private fun FirFunctionCall.getOriginalFunction(): FirCallableDeclaration? {