UFile (package = )
    UImportStatement (isOnDemand = false)
    UClass (name = LambdasKt)
        UAnnotationMethod (name = foo)
            UBlockExpression
                UQualifiedReferenceExpression
                    UQualifiedReferenceExpression
                        USimpleNameReferenceExpression (identifier = Stream)
                        UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
                            UIdentifier (Identifier (empty))
                            USimpleNameReferenceExpression (identifier = empty)
                    UCallExpression (kind = UastCallKind(name='method_call'), argCount = 1))
                        UIdentifier (Identifier (filter))
                        USimpleNameReferenceExpression (identifier = filter)
                        ULambdaExpression
                            UBlockExpression
                                UQualifiedReferenceExpression
                                    USimpleNameReferenceExpression (identifier = it)
                                    UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
                                        UIdentifier (Identifier (isEmpty))
                                        USimpleNameReferenceExpression (identifier = isEmpty)
        UAnnotationMethod (name = doSelectItem)
            UParameter (name = selectItemFunction)
                UAnnotation (fqName = org.jetbrains.annotations.NotNull)
            UBlockExpression
                UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
                    UIdentifier (Identifier (selectItemFunction))
                    USimpleNameReferenceExpression (identifier = invoke)
                UDeclarationsExpression
                    ULocalVariable (name = baz)
                        ULambdaExpression
                            UBlockExpression
                                UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
                                    UIdentifier (Identifier (Local))
                                    USimpleNameReferenceExpression (identifier = <anonymous class>)
                UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
                    UIdentifier (Identifier (baz))
                    USimpleNameReferenceExpression (identifier = invoke)
