Add AbstractDummy4jBuilder::locale and AbstractDummy4jBuilder::paths methods that accept varrargs. Add new tests for AbstractDummy4jBuilder. Refactor checking for null or empty locale and paths, ensure falling back to default values when necessary. Change MissingLocaleException class name to MissingLocaleDefinitionException and update its message.
…, refactor empty checks.
Add AbstractDummy4jBuilder::locale and AbstractDummy4jBuilder::paths methods that accept varrargs. Add new tests for AbstractDummy4jBuilder. Refactor checking for null or empty locale and paths, ensure falling back to default values when necessary. Change MissingLocaleException class name to MissingLocaleDefinitionException and update its message.