/// <inheritdoc />
public IEnumerable <Echo> Select(IRequest <Echo> request)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
var members = request.Conditions.Select(c => new JProperty(c.Key, c.Value));
var body = request.GetBody().Deserialize <JObject>();
if (body != null)
{
members = members.Union <JProperty>(body.SelectMany(item => item.Properties()), EqualityComparer);
}
var echo = new Echo(members);
TypeCache.ClearTermsFor <Echo>();
yield return(echo);
}
