Merge from booking branch

yavscModel/WorkFlow/IDataProvider.cs

@@ -4,9 +4,20 @@ using Yavsc.Model.FrontOffice;
 
 namespace Yavsc.Model.WorkFlow
 {
+	/// <summary>
+	/// I data provider.
+	/// </summary>
 	public interface IDataProvider<T>
 	{
+		/// <summary>
+		/// Get the specified id.
+		/// </summary>
+		/// <param name="id">Identifier.</param>
 		T Get (long id);
+		/// <summary>
+		/// Update the specified data.
+		/// </summary>
+		/// <param name="data">Data.</param>
 		void Update (T data);
 	}