code: public static Object defaultValue(final Class<?> type) {
  	final Object value = WRAPPER_DEFAULTS.get(Objects.requireNonNull(type));
  	if (value == null) {
  	    throw new IllegalArgumentException("Not primitive wrapper");
  	}
  	return value;
      }
docs: Gets the default value for a primitive wrapper.
  
  @param type
  Primitive wrapper type.
  @return The default value.