change method
Implementation
@override
ShelfApiRequest change({
Map<String, String>? headers,
Map<String, dynamic>? context,
ApiCodec? codec,
}) {
return ShelfApiRequest._(
url: url,
method: method,
headers: {...this.headers, ...headers ?? {}},
parameters: parameters,
context: {...this.context, ...context ?? {}},
codec: codec ?? this.codec,
);
}