/// <summary>
 /// Adds form data content to the inner <see cref="HttpRequestMessage" />.
 /// </summary>
 /// <param name="request">The <see cref="ISolidHttpRequest" /> that is being extended.</param>
 /// <param name="name">The form name of the content.</param>
 /// <param name="content">The string value of the content.</param>
 /// <returns>The <see cref="ISolidHttpRequest" /> so that additional calls can be chained.</returns>
 public static ISolidHttpRequest WithFormDataContent(this ISolidHttpRequest request, string name, string content)
 {
     return(request.WithFormDataContent(name, new StringContent(content)));
 }