isValidPairingCodeFormat method Null safety

String? isValidPairingCodeFormat(
  1. String? value
)

Validates the pairing code format.

Implementation

static String? isValidPairingCodeFormat(String? value) {
  if (value == null || value.isEmpty) {
    return "Field cannot be empty";
  }
  return value.isValidPairingCodeFormat ? null : "The format is incorrect";
}