Removes pretty print serialisation as it is not used. (#4504) (#4515)

Co-authored-by: Stuart Cam <stuart.cam@elastic.co>

Author: github-actions[bot]

src/Elasticsearch.Net/Utf8Json/JsonSerializer.cs

@@ -44,26 +44,7 @@ internal static partial class JsonSerializer
         /// </summary>
         public static IJsonFormatterResolver DefaultResolver
         {
-            get
-            {
-                if (defaultResolver == null)
-                {
-                    defaultResolver = StandardResolver.Default;
-                }
-
-                return defaultResolver;
-            }
-        }
-
-        /// <summary>
-        /// Is resolver decided?
-        /// </summary>
-        public static bool IsInitialized
-        {
-            get
-            {
-                return defaultResolver != null;
-            }
+            get { return defaultResolver ??= StandardResolver.Default; }
         }
 
         /// <summary>
@@ -389,159 +370,6 @@ public static async Task<T> DeserializeAsync<T>(Stream stream, IJsonFormatterRes
             }
         }
 
-        public static string PrettyPrint(byte[] json) => PrettyPrint(json, 0);
-
-		public static string PrettyPrint(byte[] json, int offset)
-        {
-            var reader = new JsonReader(json, offset);
-			var buffer = MemoryPool.Rent();
-			try
-			{
-				var writer = new JsonWriter(buffer);
-				WritePrettyPrint(ref reader, ref writer, 0);
-				return writer.ToString();
-			}
-			finally
-			{
-				MemoryPool.Return(buffer);
-			}
-        }
-
-        public static string PrettyPrint(string json)
-        {
-            var reader = new JsonReader(Encoding.UTF8.GetBytes(json));
-			var buffer = MemoryPool.Rent();
-
-			try
-			{
-				var writer = new JsonWriter(buffer);
-				WritePrettyPrint(ref reader, ref writer, 0);
-				return writer.ToString();
-			}
-			finally
-			{
-				MemoryPool.Return(buffer);
-			}
-        }
-
-        public static byte[] PrettyPrintByteArray(byte[] json)
-        {
-            return PrettyPrintByteArray(json, 0);
-        }
-
-        public static byte[] PrettyPrintByteArray(byte[] json, int offset)
-        {
-            var reader = new JsonReader(json, offset);
-			var buffer = MemoryPool.Rent();
-
-			try
-			{
-				var writer = new JsonWriter(buffer);
-				WritePrettyPrint(ref reader, ref writer, 0);
-				return writer.ToUtf8ByteArray();
-			}
-			finally
-			{
-				MemoryPool.Return(buffer);
-			}
-        }
-
-        public static byte[] PrettyPrintByteArray(string json)
-        {
-            var reader = new JsonReader(Encoding.UTF8.GetBytes(json));
-			var buffer = MemoryPool.Rent();
-			try
-			{
-				var writer = new JsonWriter(buffer);
-				WritePrettyPrint(ref reader, ref writer, 0);
-				return writer.ToUtf8ByteArray();
-			}
-			finally
-			{
-				MemoryPool.Return(buffer);
-			}
-        }
-
-        static readonly byte[][] indent = Enumerable.Range(0, 100).Select(x => Encoding.UTF8.GetBytes(new string(' ', x * 2))).ToArray();
-        static readonly byte[] newLine = Encoding.UTF8.GetBytes(Environment.NewLine);
-
-        static void WritePrettyPrint(ref JsonReader reader, ref JsonWriter writer, int depth)
-        {
-            var token = reader.GetCurrentJsonToken();
-            switch (token)
-            {
-                case JsonToken.BeginObject:
-                    {
-                        writer.WriteBeginObject();
-                        writer.WriteRaw(newLine);
-                        var c = 0;
-                        while (reader.ReadIsInObject(ref c))
-                        {
-                            if (c != 1)
-                            {
-                                writer.WriteRaw((byte)',');
-                                writer.WriteRaw(newLine);
-                            }
-                            writer.WriteRaw(indent[depth + 1]);
-                            writer.WritePropertyName(reader.ReadPropertyName());
-                            writer.WriteRaw((byte)' ');
-                            WritePrettyPrint(ref reader, ref writer, depth + 1);
-                        }
-                        writer.WriteRaw(newLine);
-                        writer.WriteRaw(indent[depth]);
-                        writer.WriteEndObject();
-                    }
-                    break;
-                case JsonToken.BeginArray:
-                    {
-                        writer.WriteBeginArray();
-                        writer.WriteRaw(newLine);
-                        var c = 0;
-                        while (reader.ReadIsInArray(ref c))
-                        {
-                            if (c != 1)
-                            {
-                                writer.WriteRaw((byte)',');
-                                writer.WriteRaw(newLine);
-                            }
-                            writer.WriteRaw(indent[depth + 1]);
-                            WritePrettyPrint(ref reader, ref writer, depth + 1);
-                        }
-                        writer.WriteRaw(newLine);
-                        writer.WriteRaw(indent[depth]);
-                        writer.WriteEndArray();
-                    }
-                    break;
-                case JsonToken.Number:
-                    {
-                        var v = reader.ReadDouble();
-                        writer.WriteDouble(v);
-                    }
-                    break;
-                case JsonToken.String:
-                    {
-                        var v = reader.ReadString();
-                        writer.WriteString(v);
-                    }
-                    break;
-                case JsonToken.True:
-                case JsonToken.False:
-                    {
-                        var v = reader.ReadBoolean();
-                        writer.WriteBoolean(v);
-                    }
-                    break;
-                case JsonToken.Null:
-                    {
-                        reader.ReadIsNull();
-                        writer.WriteNull();
-                    }
-                    break;
-                default:
-                    break;
-            }
-        }
-
         static int FillFromStream(Stream input, ref byte[] buffer)
         {
             int length = 0;