xo-gc: retire Collector.forward_inplace + mock x-gc utest

W/ MockCollector supporting AGCObjectVisitor facet

utest/IGCObjectVisitor_DMockCollector.cpp

@@ -0,0 +1,44 @@
+/** @file IGCObjectVisitor_DMockCollector.cpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/IGCObjectVisitor_DMockCollector.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/IGCObjectVisitor_DMockCollector.json5]
+**/
+
+#include "./IGCObjectVisitor_DMockCollector.hpp"
+
+namespace xo {
+    namespace mm {
+        auto
+        IGCObjectVisitor_DMockCollector::alloc_info(const DMockCollector & self, void * addr) -> AllocInfo
+        {
+            return self.alloc_info(addr);
+        }
+
+        auto
+        IGCObjectVisitor_DMockCollector::generation_of(const DMockCollector & self, Role r, const void * addr) noexcept -> Generation
+        {
+            return self.generation_of(r, addr);
+        }
+
+        auto
+        IGCObjectVisitor_DMockCollector::alloc_copy(DMockCollector & self, std::byte * src) -> void *
+        {
+            return self.alloc_copy(src);
+        }
+        auto
+        IGCObjectVisitor_DMockCollector::visit_child(DMockCollector & self, AGCObject * iface, void ** pp_data) noexcept -> void
+        {
+            self.visit_child(iface, pp_data);
+        }
+
+    } /*namespace mm*/
+} /*namespace xo*/
+
+/* end IGCObjectVisitor_DMockCollector.cpp */