value method

@override String? value(String name)

Convenience method for the value for a single valued header.

The value must not have more than one value.

Returns null if there is no header with the provided name.

Implementation

@override
String? value(String name) {
  final data = this[name];
  if (data == null) {
    return null;
  }
  return data.join("; ");
}