Make mapToCtor private

Author: Carl Evans

packages/graphql/lib/services/resolvers-explorer.service.ts

@@ -279,24 +279,24 @@ export class ResolversExplorerService extends BaseExplorerService {
     };
   }
 
-  mapCtors(wrapper: InstanceWrapper): Function[] {
-    const { instance } = wrapper;
-    if (!instance) {
-      return undefined;
-    }
-
-    return instance.constructor;
-  }
-
   getAllCtors(): Function[] {
     const modules = this.getModules(
       this.modulesContainer,
       this.gqlOptions.include || [],
     );
-    const resolvers = this.flatMap(modules, this.mapCtors).filter(Boolean);
+    const resolvers = this.flatMap(modules, this.mapToCtor).filter(Boolean);
     return resolvers;
   }
 
+  private mapToCtor(wrapper: InstanceWrapper): Function[] {
+    const { instance } = wrapper;
+    if (!instance) {
+      return undefined;
+    }
+
+    return instance.constructor;
+  }
+
   private registerContextProvider<T = any>(request: T, contextId: ContextId) {
     const coreModuleArray = [...this.modulesContainer.entries()]
       .filter(