code: public static TaintMethodConfig getDefaultConstructorConfig(int stackSize) {
          if (stackSize < 1) {
              throw new IllegalArgumentException("stack size less than 1");
          }
          TaintMethodConfig config = new TaintMethodConfig(false);
          config.outputTaint = new Taint(Taint.State.UNKNOWN);
          config.mutableStackIndices.add(stackSize - 1);
          config.mutableStackIndices.add(stackSize);
          return config;
      }
docs: Constructs a default constructor summary
  (modifies 2 stack items with UNKNOWN taint state)
  
  @param stackSize size of the parameter stack (including instance)
  @return new instance of default summary
  @throws IllegalArgumentException for stackSize &lt; 1