Make root name nullable

Author: xPaw

ValveKeyValue/ValveKeyValue.Console/Program.cs

@@ -41,7 +41,7 @@ static int Execute(
     return 0;
 }
 
-static void RecursivePrint(string name, KVObject obj, int indent = 0)
+static void RecursivePrint(string? name, KVObject obj, int indent = 0)
 {
     Console.Write(new string('\t', indent));
 

ValveKeyValue/ValveKeyValue/KVDocument.cs

@@ -13,15 +13,15 @@ public class KVDocument : KVObject
         /// <summary>
         /// Gets the root key name of this document.
         /// </summary>
-        public string Name { get; }
+        public string? Name { get; }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="KVDocument"/> class.
         /// </summary>
         /// <param name="header">Header of the document.</param>
         /// <param name="name">Root key name of the document.</param>
         /// <param name="root">Root value of the document.</param>
-        public KVDocument(KVHeader header, string name, KVObject root)
+        public KVDocument(KVHeader header, string? name, KVObject root)
             : base(root.ValueType, root._scalar, root._ref, root.Flag)
         {
             Header = header;