re-arrange fields

Author: SergeiPavlov

Orm/Xtensive.Orm/Orm/Linq/Materialization/MaterializationContext.cs

@@ -25,14 +25,14 @@ private struct EntityMappingCache
     private readonly EntityMappingCache[] entityMappings;
 
     /// <summary>
-    /// Gets model of current <see cref="DomainModel">domain model.</see>
+    /// Gets the session in which materialization is executing.
     /// </summary>
-    public DomainModel Model => Session.Domain.Model;
+    public Session Session { get; }
 
     /// <summary>
-    /// Gets the session in which materialization is executing.
+    /// Gets model of current <see cref="DomainModel">domain model.</see>
     /// </summary>
-    public Session Session { get; }
+    public DomainModel Model => Session.Domain.Model;
 
     /// <summary>
     /// Gets count of entities in query row.