System/Library/PrivateFrameworks/CDMFoundation.framework

CDMMDSServiceGraph.h

NSObject
>
CDMServiceGraph

@interface CDMMDSServiceGraph : CDMServiceGraph

+ (int)getNLXSchemaCDMServiceGraphName;
+ (id)requiredDAGServices;

- (void)buildGraph;
- (Class)supportedGraphInputType;

@end