[Internal] Category: Refactors Cosmos benchmark operations (#3961)

M-Lipin · web-flow · commit 8d2691b984da · 2023-07-14T12:10:39.000-07:00
* Refactoring: base classes for operations.

* Updating comments.

* Adding new line at the end of the file.

* Fixing code review points.

* Restore PrepareAsync to be virtual.
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/BenchmarkOperationType.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/BenchmarkOperationType.cs
@@ -0,0 +1,16 @@
+﻿//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace CosmosBenchmark
+{
+    /// <summary>
+    /// Benchmark operation type.
+    /// </summary>
+    public enum BenchmarkOperationType
+    {
+        Read,
+        Insert,
+        Query
+    }
+}
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/Fx/CosmosDiagnosticsLogger.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/Fx/CosmosDiagnosticsLogger.cs
@@ -6,11 +6,8 @@ namespace CosmosBenchmark
 {
     using System;
     using System.Collections.Concurrent;
-    using System.Collections.Generic;
     using System.Diagnostics;
     using System.Linq;
-    using System.Runtime.CompilerServices;
-    using System.Text;
     using Microsoft.Azure.Cosmos;
     using Newtonsoft.Json.Linq;
 
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/IBenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/IBenchmarkOperation.cs
@@ -6,10 +6,26 @@ namespace CosmosBenchmark
 {
     using System.Threading.Tasks;
 
+    /// <summary>
+    /// Represents the Benchmark operation.
+    /// </summary>
     internal interface IBenchmarkOperation
     {
-        Task PrepareAsync();
+        /// <summary>
+        /// Benchmark operation type.
+        /// </summary>
+        BenchmarkOperationType OperationType { get; }
 
+        /// <summary>
+        /// Executes Benchmark operation once asynchronously.
+        /// </summary>
+        /// <returns>The operation result wrapped by task.</returns>
         Task<OperationResult> ExecuteOnceAsync();
+
+        /// <summary>
+        /// Prepares Benchmark operation asynchronously.
+        /// </summary>
+        /// <returns>The task related to method's work.</returns>
+        Task PrepareAsync();
     }
 }
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/InsertV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/InsertV2BenchmarkOperation.cs
@@ -38,6 +38,8 @@ public InsertV2BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Insert;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             ResourceResponse<Document> itemResponse = await this.documentClient.CreateDocumentAsync(
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/QueryStreamSinglePkV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/QueryStreamSinglePkV2BenchmarkOperation.cs
@@ -47,6 +47,8 @@ public QueryStreamSinglePkV2BenchmarkOperation(
             this.containerUri = UriFactory.CreateDocumentCollectionUri(this.databsaeName, this.containerName);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Query;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             IDocumentQuery<dynamic> query = this.documentClient.CreateDocumentQuery<dynamic>(
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/QueryTSinglePkV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/QueryTSinglePkV2BenchmarkOperation.cs
@@ -46,6 +46,8 @@ public QueryTSinglePkV2BenchmarkOperation(
             this.sampleJObject[this.partitionKeyPath] = this.executionItemPartitionKey;
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Query;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             IDocumentQuery<Dictionary<string, object>> query = this.documentClient.CreateDocumentQuery<Dictionary<string, object>>(
@@ -107,7 +109,7 @@ public async Task PrepareAsync()
                     new RequestOptions() { PartitionKey = new PartitionKey(this.executionItemPartitionKey) });
             if (itemResponse.StatusCode != HttpStatusCode.Created)
             {
-                throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
             }
 
             this.initialized = true;
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadFeedStreamV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadFeedStreamV2BenchmarkOperation.cs
@@ -40,6 +40,8 @@ public ReadFeedStreamV2BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             Uri containerUri = UriFactory.CreateDocumentCollectionUri(this.databsaeName, this.containerName);
@@ -75,7 +77,7 @@ public async Task PrepareAsync()
                         new RequestOptions() { PartitionKey = new PartitionKey(this.nextExecutionItemPartitionKey) });
                 if (itemResponse.StatusCode != HttpStatusCode.Created)
                 {
-                    throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                    throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
                 }
             }
         }
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadNotExistsV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadNotExistsV2BenchmarkOperation.cs
@@ -22,6 +22,8 @@ internal class ReadNotExistsV2BenchmarkOperation : IBenchmarkOperation
 
         private readonly DocumentClient documentClient;
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public ReadNotExistsV2BenchmarkOperation(
             DocumentClient documentClient,
             string dbName,
@@ -52,7 +54,7 @@ public async Task<OperationResult> ExecuteOnceAsync()
             {
                 if (dce.StatusCode != HttpStatusCode.NotFound)
                 {
-                    throw new Exception($"ReadItem failed wth {dce?.StatusCode} {dce?.ToString()}");
+                    throw new Exception($"ReadItem failed with {dce?.StatusCode} {dce?.ToString()}");
                 }
 
                 return new OperationResult()
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadStreamExistsV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadStreamExistsV2BenchmarkOperation.cs
@@ -25,6 +25,8 @@ internal class ReadStreamExistsV2BenchmarkOperation : IBenchmarkOperation
 
         private readonly DocumentClient documentClient;
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public ReadStreamExistsV2BenchmarkOperation(
             DocumentClient documentClient,
             string dbName,
@@ -84,7 +86,7 @@ public async Task PrepareAsync()
 
                     if (itemResponse.StatusCode != HttpStatusCode.Created)
                     {
-                        throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                        throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
                     }
                 }
             }
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadTExistsV2BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v2/ReadTExistsV2BenchmarkOperation.cs
@@ -26,6 +26,8 @@ internal class ReadTExistsV2BenchmarkOperation : IBenchmarkOperation
 
         private readonly DocumentClient documentClient;
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public ReadTExistsV2BenchmarkOperation(
             DocumentClient documentClient,
             string dbName,
@@ -85,7 +87,7 @@ public async Task PrepareAsync()
 
                     if (itemResponse.StatusCode != HttpStatusCode.Created)
                     {
-                        throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                        throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
                     }
                 }
             }
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/InsertV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/InsertV3BenchmarkOperation.cs
@@ -37,6 +37,8 @@ public InsertV3BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Insert;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             using (MemoryStream input = JsonHelper.ToStream(this.sampleJObject))
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/QueryTV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/QueryTV3BenchmarkOperation.cs
@@ -31,6 +31,8 @@ internal abstract class QueryTV3BenchmarkOperation : IBenchmarkOperation
         public abstract bool IsPaginationEnabled { get; }
         public abstract bool IsQueryStream { get; }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Query;
+
         protected string executionItemId = null;
         protected string executionPartitionKey = null;
 
@@ -291,7 +293,7 @@ public virtual async Task PrepareAsync()
 
                     if (itemResponse.StatusCode != HttpStatusCode.Created)
                     {
-                        throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                        throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
                     }
                 }
             }
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadFeedStreamV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadFeedStreamV3BenchmarkOperation.cs
@@ -39,6 +39,8 @@ public ReadFeedStreamV3BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             FeedIterator feedIterator = this.container
@@ -50,7 +52,7 @@ public async Task<OperationResult> ExecuteOnceAsync()
             ResponseMessage feedResponse = await feedIterator.ReadNextAsync();
             if (feedResponse.StatusCode != HttpStatusCode.OK)
             {
-                throw new Exception($"ReadItem failed wth {feedResponse.StatusCode}");
+                throw new Exception($"ReadItem failed with {feedResponse.StatusCode}");
             }
 
             return new OperationResult()
@@ -84,7 +86,7 @@ public async Task PrepareAsync()
 
                     if (itemResponse.StatusCode != HttpStatusCode.Created)
                     {
-                        throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                        throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
                     }
                 }
             }
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadNotExistsV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadNotExistsV3BenchmarkOperation.cs
@@ -32,6 +32,8 @@ public ReadNotExistsV3BenchmarkOperation(
             this.container = cosmosClient.GetContainer(this.databsaeName, this.containerName);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             using (ResponseMessage itemResponse = await this.container.ReadItemStreamAsync(
@@ -40,7 +42,7 @@ public async Task<OperationResult> ExecuteOnceAsync()
             {
                 if (itemResponse.StatusCode != HttpStatusCode.NotFound)
                 {
-                    throw new Exception($"ReadItem failed wth {itemResponse.StatusCode}");
+                    throw new Exception($"ReadItem failed with {itemResponse.StatusCode}");
                 }
 
                 return new OperationResult()
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadStreamExistsV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadStreamExistsV3BenchmarkOperation.cs
@@ -39,6 +39,8 @@ public ReadStreamExistsV3BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             using (ResponseMessage itemResponse = await this.container.ReadItemStreamAsync(
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadStreamExistsWithDiagnosticsV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadStreamExistsWithDiagnosticsV3BenchmarkOperation.cs
@@ -39,6 +39,8 @@ public ReadStreamExistsWithDiagnosticsV3BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             using (ResponseMessage itemResponse = await this.container.ReadItemStreamAsync(
@@ -47,7 +49,7 @@ public async Task<OperationResult> ExecuteOnceAsync()
             {
                 if (itemResponse.StatusCode != HttpStatusCode.OK)
                 {
-                    throw new Exception($"ReadItem failed wth {itemResponse.StatusCode}");
+                    throw new Exception($"ReadItem failed with {itemResponse.StatusCode}");
                 }
 
                 string diagnostics = itemResponse.Diagnostics.ToString();
diff --git a/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadTExistsV3BenchmarkOperation.cs b/Microsoft.Azure.Cosmos.Samples/Tools/Benchmark/v3/ReadTExistsV3BenchmarkOperation.cs
@@ -10,7 +10,6 @@ namespace CosmosBenchmark
     using System.Net;
     using System.Threading.Tasks;
     using Microsoft.Azure.Cosmos;
-    using Newtonsoft.Json.Linq;
 
     internal class ReadTExistsV3BenchmarkOperation : IBenchmarkOperation
     {
@@ -40,14 +39,16 @@ public ReadTExistsV3BenchmarkOperation(
             this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);
         }
 
+        public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;
+
         public async Task<OperationResult> ExecuteOnceAsync()
         {
             ItemResponse<Dictionary<string, object>> itemResponse = await this.container.ReadItemAsync<Dictionary<string, object>>(
                         this.nextExecutionItemId,
                         new PartitionKey(this.nextExecutionItemPartitionKey));
             if (itemResponse.StatusCode != HttpStatusCode.OK)
             {
-                throw new Exception($"ReadItem failed wth {itemResponse.StatusCode}");
+                throw new Exception($"ReadItem failed with {itemResponse.StatusCode}");
             }
 
             return new OperationResult()
@@ -81,7 +82,7 @@ public async Task PrepareAsync()
 
                     if (itemResponse.StatusCode != HttpStatusCode.Created)
                     {
-                        throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");
+                        throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");
                     }
                 }
             }

Original file line number	Diff line number	Diff line change
`@@ -38,6 +38,8 @@ public InsertV2BenchmarkOperation(`
`38`	`38`	`this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);`
`39`	`39`	`}`
`40`	`40`
	`41`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Insert;`
	`42`	`+`
`41`	`43`	`public async Task<OperationResult> ExecuteOnceAsync()`
`42`	`44`	`{`
`43`	`45`	`ResourceResponse<Document> itemResponse = await this.documentClient.CreateDocumentAsync(`
Original file line number	Diff line number	Diff line change
`@@ -47,6 +47,8 @@ public QueryStreamSinglePkV2BenchmarkOperation(`
`47`	`47`	`this.containerUri = UriFactory.CreateDocumentCollectionUri(this.databsaeName, this.containerName);`
`48`	`48`	`}`
`49`	`49`
	`50`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Query;`
	`51`	`+`
`50`	`52`	`public async Task<OperationResult> ExecuteOnceAsync()`
`51`	`53`	`{`
`52`	`54`	`IDocumentQuery<dynamic> query = this.documentClient.CreateDocumentQuery<dynamic>(`
Original file line number	Diff line number	Diff line change
`@@ -46,6 +46,8 @@ public QueryTSinglePkV2BenchmarkOperation(`
`46`	`46`	`this.sampleJObject[this.partitionKeyPath] = this.executionItemPartitionKey;`
`47`	`47`	`}`
`48`	`48`
	`49`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Query;`
	`50`	`+`
`49`	`51`	`public async Task<OperationResult> ExecuteOnceAsync()`
`50`	`52`	`{`
`51`	`53`	`IDocumentQuery<Dictionary<string, object>> query = this.documentClient.CreateDocumentQuery<Dictionary<string, object>>(`
`@@ -107,7 +109,7 @@ public async Task PrepareAsync()`
`107`	`109`	`new RequestOptions() { PartitionKey = new PartitionKey(this.executionItemPartitionKey) });`
`108`	`110`	`if (itemResponse.StatusCode != HttpStatusCode.Created)`
`109`	`111`	`{`
`110`		`- throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");`
	`112`	`+ throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");`
`111`	`113`	`}`
`112`	`114`
`113`	`115`	`this.initialized = true;`
Original file line number	Diff line number	Diff line change
`@@ -40,6 +40,8 @@ public ReadFeedStreamV2BenchmarkOperation(`
`40`	`40`	`this.sampleJObject = JsonHelper.Deserialize<Dictionary<string, object>>(sampleJson);`
`41`	`41`	`}`
`42`	`42`
	`43`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;`
	`44`	`+`
`43`	`45`	`public async Task<OperationResult> ExecuteOnceAsync()`
`44`	`46`	`{`
`45`	`47`	`Uri containerUri = UriFactory.CreateDocumentCollectionUri(this.databsaeName, this.containerName);`
`@@ -75,7 +77,7 @@ public async Task PrepareAsync()`
`75`	`77`	`new RequestOptions() { PartitionKey = new PartitionKey(this.nextExecutionItemPartitionKey) });`
`76`	`78`	`if (itemResponse.StatusCode != HttpStatusCode.Created)`
`77`	`79`	`{`
`78`		`- throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");`
	`80`	`+ throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");`
`79`	`81`	`}`
`80`	`82`	`}`
`81`	`83`	`}`
Original file line number	Diff line number	Diff line change
`@@ -22,6 +22,8 @@ internal class ReadNotExistsV2BenchmarkOperation : IBenchmarkOperation`
`22`	`22`
`23`	`23`	`private readonly DocumentClient documentClient;`
`24`	`24`
	`25`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;`
	`26`	`+`
`25`	`27`	`public ReadNotExistsV2BenchmarkOperation(`
`26`	`28`	`DocumentClient documentClient,`
`27`	`29`	`string dbName,`
`@@ -52,7 +54,7 @@ public async Task<OperationResult> ExecuteOnceAsync()`
`52`	`54`	`{`
`53`	`55`	`if (dce.StatusCode != HttpStatusCode.NotFound)`
`54`	`56`	`{`
`55`		`- throw new Exception($"ReadItem failed wth {dce?.StatusCode} {dce?.ToString()}");`
	`57`	`+ throw new Exception($"ReadItem failed with {dce?.StatusCode} {dce?.ToString()}");`
`56`	`58`	`}`
`57`	`59`
`58`	`60`	`return new OperationResult()`
Original file line number	Diff line number	Diff line change
`@@ -25,6 +25,8 @@ internal class ReadStreamExistsV2BenchmarkOperation : IBenchmarkOperation`
`25`	`25`
`26`	`26`	`private readonly DocumentClient documentClient;`
`27`	`27`
	`28`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;`
	`29`	`+`
`28`	`30`	`public ReadStreamExistsV2BenchmarkOperation(`
`29`	`31`	`DocumentClient documentClient,`
`30`	`32`	`string dbName,`
`@@ -84,7 +86,7 @@ public async Task PrepareAsync()`
`84`	`86`
`85`	`87`	`if (itemResponse.StatusCode != HttpStatusCode.Created)`
`86`	`88`	`{`
`87`		`- throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");`
	`89`	`+ throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");`
`88`	`90`	`}`
`89`	`91`	`}`
`90`	`92`	`}`
Original file line number	Diff line number	Diff line change
`@@ -26,6 +26,8 @@ internal class ReadTExistsV2BenchmarkOperation : IBenchmarkOperation`
`26`	`26`
`27`	`27`	`private readonly DocumentClient documentClient;`
`28`	`28`
	`29`	`+ public BenchmarkOperationType OperationType => BenchmarkOperationType.Read;`
	`30`	`+`
`29`	`31`	`public ReadTExistsV2BenchmarkOperation(`
`30`	`32`	`DocumentClient documentClient,`
`31`	`33`	`string dbName,`
`@@ -85,7 +87,7 @@ public async Task PrepareAsync()`
`85`	`87`
`86`	`88`	`if (itemResponse.StatusCode != HttpStatusCode.Created)`
`87`	`89`	`{`
`88`		`- throw new Exception($"Create failed with statuscode: {itemResponse.StatusCode}");`
	`90`	`+ throw new Exception($"Create failed with status code: {itemResponse.StatusCode}");`
`89`	`91`	`}`
`90`	`92`	`}`
`91`	`93`	`}`