public IDictionary <string, IReadOnlyCollection <string> > PrepareHeaders()
{
var headers = new Dictionary <string, IReadOnlyCollection <string> >();
_includes.ForEach(include => headers.Add($"{IncludePrefix}{include.Key}", include.Value));
headers.Add(IncludeAllPrefix, new[] { IncludeAll.ToString().ToLower() });
return(headers);
}
