Add OGSubgraphRemoveObserver

Author: jcmosc

Sources/OpenGraphCxx/Graph/OGSubgraph.cpp

@@ -198,6 +198,10 @@ OGUniqueID OGSubgraphAddObserver(OGSubgraphRef cf_subgraph,
     return subgraph->add_observer(OG::ClosureFunction<void>(function, context));
 }
 
+void OGSubgraphRemoveObserver(OGSubgraphRef cf_subgraph, OGUniqueID observer_id) {
+    // TODO
+}
+
 #if !OG_TARGET_OS_WASI
 static bool should_record_tree;
 static dispatch_once_t should_record_tree_once;

Sources/OpenGraphCxx/include/OpenGraph/OGSubgraph.h

@@ -113,6 +113,10 @@ OGUniqueID OGSubgraphAddObserver(OGSubgraphRef cf_subgraph,
                            const void (*function)(const void * _Nullable context OG_SWIFT_CONTEXT) OG_SWIFT_CC(swift),
                            const void * _Nullable context);
 
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+void OGSubgraphRemoveObserver(OGSubgraphRef cf_subgraph, OGUniqueID observer_id) OG_SWIFT_NAME(OGSubgraphRef.removeObserver(self:observerID:));
+
 OG_EXPORT
 OG_REFINED_FOR_SWIFT
 bool OGSubgraphShouldRecordTree(void) OG_SWIFT_NAME(getter:OGSubgraphRef.shouldRecordTree());