Using multiple template variables in Rule only replaces firs variable

[dcerecedo]

Whe defining a rule as such:

Fixture.of(DriverImpl.class).addTemplate("valid", new Rule() {{
  add("id", new IdFunction());
  add("legalId", new LegalIdFunction());
  add("firstName", new FirstNameFunction());
  add("lastName", new LastNameFunction());
  add("username", "${firstName}.${lastName}");
}});

Only the first variable reference is subtitued resulting in a fixture with the following username attribute value: Jansen.${lastName}