docs: private boolean hasCustomReadObject(Method m, ClassContext classContext,List<String> classesToIgnore)
              throws CFGBuilderException, DataflowAnalysisException {
          ConstantPoolGen cpg = classContext.getConstantPoolGen();
          CFG cfg = classContext.getCFG(m);
          int count = 0;
          for (Iterator<Location> i = cfg.locationIterator(); i.hasNext(); ) {
              Location location = i.next();
              Instruction inst = location.getHandle().getInstruction();
              //ByteCode.printOpCode(inst,cpg);
              if(inst instanceof InvokeInstruction) {
                  InvokeInstruction invoke = (InvokeInstruction) inst;
                  if (!READ_DESERIALIZATION_METHODS.contains(invoke.getMethodName(cpg))
                          && !classesToIgnore.contains(invoke.getClassName(cpg))) {
                      count +=1;
                  }
              }
          }
          return count > 3;
      }