/// <summary>
 /// Initializes a new instance of the <see cref="Terradue.OpenSearch.Filters.OpenSearchCorrelationFilter"/> class.
 /// </summary>
 /// <param name="ose">Ose.</param>
 /// <param name="factory">Factory.</param>
 public OpenSearchCorrelationFilter(OpenSearchEngine ose, IOpenSearchableFactory factory = null)
 {
     this.ose = ose;
     if (factory != null) {
         this.factory = factory;
     } else {
         this.factory = ose;
     }
 }
 public FedeoOpenSearchable(OpenSearchUrl url, IOpenSearchableFactory factory) : base(url, factory.Settings)
 {
 }
 public CwicOpenSearchable(OpenSearchDescription osd, IOpenSearchableFactory factory) : base(osd, factory.Settings)
 {
 }