[clang] [cindex] Add API to query the class methods of a type (PR #123539)

[Trevor Laughlin via cfe-commits]

================
@@ -2052,6 +2052,19 @@ def referenced(self):
 
         return self._referenced
 
+    @property
+    def specialized(self):
+        """
+        For a cursor that is instantiated from a template, returns a cursor
+        representing the template that it was instantiated from.
+        """
+        if not hasattr(self, "_specialized"):
+            self._specialized = Cursor.from_result(
+                conf.lib.clang_getSpecializedCursorTemplate(self), self
+            )
+
+        return self._specialized
+
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trelau wrote:

removed this and will put into a different PR (with tests)

https://github.com/llvm/llvm-project/pull/123539