[clang-tools-extra] clangd: Make callHierarchy follow inheritance (PR #163024)

[via cfe-commits]

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@@ -181,6 +181,14 @@ class SymbolIndex {
       llvm::function_ref<void(const SymbolID &Subject, const Symbol &Object)>
           Callback) const = 0;
 
+  /// Finds all relations (O, P, S) stored in the index such that S is among
+  /// Req.Subjects and P is Req.Predicate, and invokes \p Callback for (S, O) in
+  /// each. Currently only allows the OverridenBy relation.
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timon-ul wrote:

No way I keep misspelling this....

https://github.com/llvm/llvm-project/pull/163024