Default values in dataset/datastore wizards

Tried to set default value to the field using following approach:

    @Option
    @Required
    @DefaultValue("testDefaultValue")
    @Documentation("TODO fill the documentation for this parameter")
    private String account = "testDefaultValue";

In Component tab this value appears in the account field, but when opening dataStore wizard window - this value is absent. Need to clarify if this behavior is correct.