organization static method

String? organization(
  1. String input
)

Implementation

static String? organization(String input) {
  final trimmed = input.trim();
  if (trimmed.isEmpty) return 'Organization cannot be empty.';
  if (!RegExp(r'^[a-z][a-z0-9]*(\.[a-z][a-z0-9]*)+$').hasMatch(trimmed)) {
    return 'Invalid organization "$input". '
        'Use reverse domain format (e.g., com.example).';
  }
  return null;
}