TypeFrameModelingVisitor visitor = new RefComparisonTypeFrameModelingVisitor(methodGen.getConstantPool());
TypeFrameModelingVisitor visitor = new RefComparisonTypeFrameModelingVisitor(methodGen.getConstantPool(), lookupFailureCallback);
			public TypeAnalysis createAnalysis(MethodGen methodGen, CFG cfg) {				TypeMerger typeMerger = new RefComparisonTypeMerger(lookupFailureCallback);				TypeFrameModelingVisitor visitor = new RefComparisonTypeFrameModelingVisitor(methodGen.getConstantPool());				TypeAnalysis analysis = new TypeAnalysis(methodGen, typeMerger, visitor);				return analysis;			}