code: public boolean isBaseType(Class<?> clazz) {
          return (clazz == String.class) ||
                  (clazz == Long.class) ||
                  (clazz == Integer.class) ||
                  (clazz == Boolean.class) ||
                  (clazz == Double.class) ||
                  (clazz == BigDecimal.class) ||
                  (clazz == byte[].class);
      }
docs: Is the given class one of the supported ModelNode base classes (String, Long, BigDecimal, etc.)
  
  @param clazz The class to be tested.
  @return <code>true</code> if the given class is a base class, <code>false</code> otherwise.