struct StableHLOCompositeOptionsT;

struct Operator;
struct OperatorBuilder;
struct OperatorT;

struct SubGraph;
struct SubGraphBuilder;
struct SubGraphT;

struct Buffer;
struct BufferBuilder;
struct BufferT;

struct Metadata;
struct MetadataBuilder;
struct MetadataT;

struct TensorMap;
struct TensorMapBuilder;
struct TensorMapT;

struct SignatureDef;