code: public IParameterReact getParameterClass(Class<?> paramClass) {
          for (Iterator<IParameterReact> it = paramsMap2.iterator(); it.hasNext();) {
              IParameterReact ipr = it.next();
              if (ipr.getClass().equals(paramClass)) return ipr;
          }
  
          return null;
      }
docs: Return the IParameterReact if it exists given the class.
  
  @param paramClass The class
  @return           The IParameterReact