Moves property to proper place within the class

Author: alex-kulakov

Orm/Xtensive.Orm/Tuples/Transform/MapTransform.cs

@@ -56,6 +56,15 @@ public IReadOnlyList<int> SingleSourceMap {
       get => singleSourceMap;
     }
 
+    /// <summary>
+    /// Gets or sets destination-to-source field map.
+    /// </summary>
+    public IReadOnlyList<Pair<int, int>> Map
+    {
+      [DebuggerStepThrough]
+      get { return Array.AsReadOnly(map); }
+    }
+
     protected void SetSingleSourceMap(IReadOnlyList<int> singleSourceMap)
     {
       ArgumentValidator.EnsureArgumentNotNull(singleSourceMap, nameof(singleSourceMap));
@@ -73,14 +82,6 @@ protected void SetSingleSourceMap(IReadOnlyList<int> singleSourceMap)
       sourceCount = 1;
     }
 
-    /// <summary>
-    /// Gets or sets destination-to-source field map.
-    /// </summary>
-    public IReadOnlyList<Pair<int, int>> Map {
-      [DebuggerStepThrough]
-      get { return Array.AsReadOnly(map); }
-    }
-
     protected void SetMap(Pair<int, int>[] map)
     {
       ArgumentValidator.EnsureArgumentNotNull(map, nameof(map));