stacItem clone + factory extensions types access

src/DotNetStac/Extensions/StacExtensionsFactory.cs

@@ -35,6 +35,8 @@ public static StacExtensionsFactory Default
             }
         }
 
+        public Dictionary<string, Type> StacExtensionsDictionary => stacExtensionsDictionary;
+
         public static StacExtensionsFactory CreateDefaultFactory()
         {
             return new StacExtensionsFactory();

src/DotNetStac/Item/StacItem.Model.cs

@@ -36,6 +36,16 @@ public StacItem(IGeometryObject geometry, object properties, string id = null) :
         {
         }
 
+        public StacItem(StacItem stacItem) : this(stacItem.Geometry, stacItem.Properties, stacItem.Id)
+        {
+            this.stacExtensionsStrings = stacItem.stacExtensionsStrings;
+            this.stacVersion = stacItem.stacVersion;
+            this.links = stacItem.links;
+            this.assets = stacItem.assets;
+            this.collection = stacItem.collection;
+            this.sourceUri = stacItem.sourceUri;
+        }
+
         [JsonProperty("stac_extensions")]
         public string[] StacExtensionsStrings { get => stacExtensionsStrings; set => stacExtensionsStrings = value; }