public RedmineManager(string host, IAuthentication authentication, MimeType mimeType = MimeType.Xml,
IRedmineHttpSettings httpClientHandler = null)
{
host.EnsureValidHost();
if (authentication == null)
{
throw new ArgumentNullException(nameof(authentication));
}
Host = host;
MimeType = mimeType;
var auth = authentication.Build();
var clientHandler = httpClientHandler != null
? httpClientHandler.SetAuthentication(auth).Build()
: DefaultRedmineHttpSettings.Create().SetAuthentication(auth).Build();
RedmineHttp = new RedmineHttpClient(clientHandler);
}