UFile (package = )
    UImportStatement (isOnDemand = false)
    UClass (name = LambdasKt)
        UMethod (name = foo)
            UBlockExpression
                UQualifiedReferenceExpression
                    UQualifiedReferenceExpression
                        USimpleNameReferenceExpression (identifier = Stream)
                        [!] UnknownKotlinExpression (CALL_EXPRESSION)
                    [!] UnknownKotlinExpression (CALL_EXPRESSION)
        UMethod (name = doSelectItem)
            UParameter (name = selectItemFunction)
            UBlockExpression
                [!] UnknownKotlinExpression (CALL_EXPRESSION)
                [!] UnknownKotlinExpression (PROPERTY)
                [!] UnknownKotlinExpression (CALL_EXPRESSION)
        UMethod (name = lambdaInPlaceCall)
            UBlockExpression
                UWhileExpression
                    [!] UnknownKotlinExpression (CALL_EXPRESSION)
                    UBlockExpression
