From 12f51dec4e6ee3c4b64719799066749feae04cd5 Mon Sep 17 00:00:00 2001
From: abi <abi@novicell.co.uk>
Date: Thu, 2 Jan 2020 23:00:53 +0000
Subject: [PATCH] Use immutable types

---
 .../Search/IInternalSearchConstants.cs           | 10 +++++-----
 .../Search/InternalSearchConstants.cs            | 16 ++++++++--------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/Umbraco.Web/Search/IInternalSearchConstants.cs b/src/Umbraco.Web/Search/IInternalSearchConstants.cs
index 72a37deaa1..06222e2ec7 100644
--- a/src/Umbraco.Web/Search/IInternalSearchConstants.cs
+++ b/src/Umbraco.Web/Search/IInternalSearchConstants.cs
@@ -4,10 +4,10 @@ namespace Umbraco.Web.Search
 {
     public interface IInternalSearchConstants
     {
-        List<string> GetBackOfficeFields();
-        List<string> GetBackOfficeMembersFields();
-        
-        List<string> GetBackOfficeMediaFields();
-        List<string> GetBackOfficeDocumentFields();
+        IEnumerable<string> GetBackOfficeFields();
+        IEnumerable<string> GetBackOfficeMembersFields();
+
+        IEnumerable<string> GetBackOfficeMediaFields();
+        IEnumerable<string> GetBackOfficeDocumentFields();
     }
 }
diff --git a/src/Umbraco.Web/Search/InternalSearchConstants.cs b/src/Umbraco.Web/Search/InternalSearchConstants.cs
index 012cd98f1d..51e5df4c4e 100644
--- a/src/Umbraco.Web/Search/InternalSearchConstants.cs
+++ b/src/Umbraco.Web/Search/InternalSearchConstants.cs
@@ -6,25 +6,25 @@ namespace Umbraco.Web
 {
     public class InternalSearchConstants : IInternalSearchConstants
     {
-        private List<string> _backOfficeFields = new List<string> {"id", "__NodeId", "__Key"};
-        public List<string> GetBackOfficeFields()
+        private IReadOnlyList<string> _backOfficeFields = new List<string> {"id", "__NodeId", "__Key"};
+        public IEnumerable<string> GetBackOfficeFields()
         {
             return _backOfficeFields;
         }
 
 
-        private List<string> _backOfficeMembersFields = new List<string> {"email", "loginName"};
-        public List<string> GetBackOfficeMembersFields()
+        private IReadOnlyList<string> _backOfficeMembersFields = new List<string> {"email", "loginName"};
+        public IEnumerable<string> GetBackOfficeMembersFields()
         {
             return _backOfficeMembersFields;
         }
-        private List<string> _backOfficeMediaFields = new List<string> {UmbracoExamineIndex.UmbracoFileFieldName };
-        public List<string> GetBackOfficeMediaFields()
+        private IReadOnlyList<string> _backOfficeMediaFields = new List<string> {UmbracoExamineIndex.UmbracoFileFieldName };
+        public IEnumerable<string> GetBackOfficeMediaFields()
         {
             return _backOfficeMediaFields;
         }
-        private List<string> _backOfficeDocumentFields = new List<string> ();
-        public List<string> GetBackOfficeDocumentFields()
+        private IReadOnlyList<string> _backOfficeDocumentFields = new List<string> ();
+        public IEnumerable<string> GetBackOfficeDocumentFields()
         {
             return _backOfficeDocumentFields;
         }