open fun setBasenamePrefix(@Nullable basenamePrefix: String): Unit
Set the prefix that gets applied to the ResourceBundle basenames, i.e. the theme names. E.g.: basenamePrefix="test.", themeName="theme" -> basename="test.theme".
Note that ResourceBundle names are effectively classpath locations: As a consequence, the JDK's standard ResourceBundle treats dots as package separators. This means that "test.theme" is effectively equivalent to "test/theme", just like it is for programmatic java.util.ResourceBundle usage.