docs: public static Class<?> getPrimitiveType(Class<?> wrapperType) {
          // does anyone know a better strategy than comparing names?
          if (Boolean.class.equals(wrapperType)) {
              return boolean.class;
          } else if (Float.class.equals(wrapperType)) {
              return float.class;
          } else if (Long.class.equals(wrapperType)) {
              return long.class;
          } else if (Integer.class.equals(wrapperType)) {
              return int.class;
          } else if (Short.class.equals(wrapperType)) {
              return short.class;
          } else if (Byte.class.equals(wrapperType)) {
              return byte.class;
          } else if (Double.class.equals(wrapperType)) {
              return double.class;
          } else if (Character.class.equals(wrapperType)) {
              return char.class;
          } else {
              // Log log = LogFactory.getLog(MethodUtils.class);
              if (log.isDebugEnabled()) {
                  log.debug("Not a known primitive wrapper class: " + wrapperType);
              }
              return null;
          }
      }