1 files changed, 3 insertions, 6 deletions
diff --git a/src/mongo/db/pipeline/document_source_lookup.h b/src/mongo/db/pipeline/document_source_lookup.h
index 504b4b1d83f..fef7cd0067f 100644
--- a/src/mongo/db/pipeline/document_source_lookup.h
+++ b/src/mongo/db/pipeline/document_source_lookup.h
@@ -127,7 +127,7 @@ public:
     const char* getSourceName() const final;
     void serializeToArray(
         std::vector<Value>& array,
-        const SerializationOptions& opts = SerializationOptions{}) const final override;
+        boost::optional<ExplainOptions::Verbosity> explain = boost::none) const final;
 
     /**
      * Returns the 'as' path, and possibly fields modified by an absorbed $unwind.
@@ -150,8 +150,6 @@ public:
 
     void reattachToOperationContext(OperationContext* opCtx) final;
 
-    bool validateOperationContext(const OperationContext* opCtx) const final;
-
     bool usedDisk() final;
 
     const SpecificStats* getSpecificStats() const final {
@@ -305,9 +303,8 @@ private:
     /**
      * Should not be called; use serializeToArray instead.
      */
-    Value serialize(
-        const SerializationOptions& opts = SerializationOptions{}) const final override {
-        MONGO_UNREACHABLE_TASSERT(7484304);
+    Value serialize(boost::optional<ExplainOptions::Verbosity> explain = boost::none) const final {
+        MONGO_UNREACHABLE;
     }
 
     GetNextResult unwindResult();