code: private static String getParameterName(Method m, int paramIndex) {
          PName pName = getParameterAnnotation(m, paramIndex, PName.class);
          if (pName != null) {
              return pName.value();
          } else {
              return "";
          }
      }
docs: Get the name of a method parameter via its <code>PName</code> annotation.
  
  @param m
  @param paramIndex the index of the parameter array.
  @return the parameter name or an empty string if not available.