Index: generic/gentclAPI.decls
===================================================================
diff -u -r477c12e1b0f192ab18de415e30001ea151d7ddda -r033a6b832c7cc7d99894422d63d9ff944c09c35d
--- generic/gentclAPI.decls	(.../gentclAPI.decls)	(revision 477c12e1b0f192ab18de415e30001ea151d7ddda)
+++ generic/gentclAPI.decls	(.../gentclAPI.decls)	(revision 033a6b832c7cc7d99894422d63d9ff944c09c35d)
@@ -208,7 +208,8 @@
 classMethod instinvar XOTclCInvariantsMethod {
   {-argName "invariantlist" -required 1 -type tclobj}
 }
-classMethod instmixinguard XOTclCInstMixinGuardMethod {
+classMethod mixinguard XOTclCMixinGuardMethod {
+  {-argName "-per-object" -type switch}
   {-argName "mixin" -required 1}
   {-argName "guard" -required 1 -type tclobj}
 }