code: @Override
      public UsagesRequiringNonNullValues analyze(IAnalysisCache analysisCache, MethodDescriptor descriptor)
              throws CheckedAnalysisException {
          // ClassContext classContext = getClassContext(jclass);
          ClassContext classContext = analysisCache.getClassAnalysis(ClassContext.class, descriptor.getClassDescriptor());
          Method method = getMethod(analysisCache, descriptor);
          return DerefFinder.getAnalysis(classContext, method);
      }
docs: /*
  (non-Javadoc)
  
  @see
  edu.umd.cs.findbugs.classfile.IAnalysisEngine#analyze(edu.umd.cs.findbugs
  .classfile.IAnalysisCache, java.lang.Object)