post method
      
Future<HttpTextResponse> 
post(
    
- String url, {
- Map<String, String> ? query,
- HttpHeaders? headers,
- HttpBody? body,
- CancelToken? cancelToken,
- ProgressCallback? onSendProgress,
- ProgressCallback? onReceiveProgress,
Makes an HTTP POST request and returns the response as text. Use requestBytes, or requestStream for other response types.
Implementation
Future<HttpTextResponse> post(
  String url, {
  Map<String, String>? query,
  HttpHeaders? headers,
  HttpBody? body,
  CancelToken? cancelToken,
  ProgressCallback? onSendProgress,
  ProgressCallback? onReceiveProgress,
}) =>
    requestText(
      method: HttpMethod.post,
      url: url,
      query: query,
      headers: headers,
      body: body,
      cancelToken: cancelToken,
      onSendProgress: onSendProgress,
      onReceiveProgress: onReceiveProgress,
    );