# getNormalizedVariant abstract method

String? getNormalizedVariant()

Returns normalized variant (uppercase), or null if not specified.

This method ensures the variant is in uppercase format for consistency, though variants can contain various characters including hyphens.

Example:

    final locale1 = Locale('en', 'US', 'posix');
    print(locale1.getNormalizedVariant()); // Output: "POSIX"

    final locale2 = Locale('en', 'US');
    print(locale2.getNormalizedVariant()); // Output: null

## Implementation

    String? getNormalizedVariant();