code: public Map<ValueNumber, Integer> getValueNumberToParamMap(Method method) {
          return getValueNumberToParamMap(method.getSignature(), method.isStatic());
      }
docs: Build map of value numbers to param indices. The first parameter has
  index 0, the second has index 1, etc.
  
  @param method
  the method analyzed by the ValueNumberAnalysis
  @return the value number to parameter index map