resolveMessage abstract method
Resolve a message for the given code and locale.
Subclasses must implement this method to provide the actual message lookup logic. This method should return null if the message is not found for the given locale.
Parameters:
code
: The message code to resolvelocale
: The locale to resolve for
Returns the message template or null if not found.
Implementation
String? resolveMessage(String code, Locale locale);