Removes new namespaces: Umbraco.Core.Cookie, Umbraco.Core.Session, Umbraco.Core.Request, these are web things and should be part of one namespace

src/Umbraco.Core/Trees/SearchableTreeAttribute.cs

@@ -0,0 +1,53 @@
+using System;
+
+namespace Umbraco.Web.Trees
+{
+    [AttributeUsage(AttributeTargets.Class)]
+    public sealed class SearchableTreeAttribute : Attribute
+    {
+        public const int DefaultSortOrder = 1000;
+
+        public string ServiceName { get; }
+
+        public string MethodName { get; }
+
+        public int SortOrder { get; }
+
+        /// <summary>
+        /// This constructor will assume that the method name equals `format(searchResult, appAlias, treeAlias)`.
+        /// </summary>
+        /// <param name="serviceName">Name of the service.</param>
+        public SearchableTreeAttribute(string serviceName)
+            : this(serviceName, string.Empty)
+        { }
+
+        /// <summary>
+        /// This constructor defines both the Angular service and method name to use.
+        /// </summary>
+        /// <param name="serviceName">Name of the service.</param>
+        /// <param name="methodName">Name of the method.</param>
+        public SearchableTreeAttribute(string serviceName, string methodName)
+            : this(serviceName, methodName, DefaultSortOrder)
+        { }
+
+        /// <summary>
+        /// This constructor defines both the Angular service and method name to use and explicitly defines a sort order for the results
+        /// </summary>
+        /// <param name="serviceName">Name of the service.</param>
+        /// <param name="methodName">Name of the method.</param>
+        /// <param name="sortOrder">The sort order.</param>
+        /// <exception cref="ArgumentNullException">serviceName
+        /// or
+        /// methodName</exception>
+        /// <exception cref="ArgumentException">Value can't be empty or consist only of white-space characters. - serviceName</exception>
+        public SearchableTreeAttribute(string serviceName, string methodName, int sortOrder)
+        {
+            if (serviceName == null) throw new ArgumentNullException(nameof(serviceName));
+            if (string.IsNullOrWhiteSpace(serviceName)) throw new ArgumentException("Value can't be empty or consist only of white-space characters.", nameof(serviceName));
+
+            ServiceName = serviceName;
+            MethodName = methodName ?? throw new ArgumentNullException(nameof(methodName));
+            SortOrder = sortOrder;
+        }
+    }
+}