[Backport 8.14] Implement common request query parameters for request descriptors

src/Elastic.Clients.Elasticsearch.Shared/Core/Request/PlainRequest.cs

@@ -30,12 +30,12 @@ public bool? ErrorTrace
 	}
 
 	/// <summary>
-	///     A comma-separated list of filters used to reduce the response.
-	///     <para>
-	///         Use of response filtering can result in a response from Elasticsearch
-	///         that cannot be correctly deserialized to the respective response type for the request.
-	///         In such situations, use the low level client to issue the request and handle response deserialization.
-	///     </para>
+	/// A list of filters used to reduce the response.
+	/// <para>
+	///     Use of response filtering can result in a response from Elasticsearch
+	///     that cannot be correctly deserialized to the respective response type for the request.
+	///     In such situations, use the low level client to issue the request and handle response deserialization.
+	/// </para>
 	/// </summary>
 	[JsonIgnore]
 	public string[] FilterPath
@@ -44,7 +44,7 @@ public string[] FilterPath
 		set => Q("filter_path", value);
 	}
 
-	///<summary>Return human readable values for statistics.</summary>
+	///<summary>Return human-readable values for statistics.</summary>
 	[JsonIgnore]
 	public bool? Human
 	{

src/Elastic.Clients.Elasticsearch.Shared/Core/Request/Request.cs

@@ -80,9 +80,9 @@ protected Request(Func<RouteValues, RouteValues> pathSelector)
 
 	[JsonIgnore] internal TParameters RequestParameters => _parameters;
 
-	protected TOut Q<TOut>(string name) => RequestParameters.GetQueryStringValue<TOut>(name);
+	protected TOut? Q<TOut>(string name) => RequestParameters.GetQueryStringValue<TOut>(name);
 
-	protected void Q(string name, object value) => RequestParameters.SetQueryString(name, value);
+	protected void Q(string name, object? value) => RequestParameters.SetQueryString(name, value);
 
 	protected void Q(string name, IStringable value) => RequestParameters.SetQueryString(name, value.GetString());
 

src/Elastic.Clients.Elasticsearch.Shared/Core/Request/RequestDescriptor.cs

@@ -5,6 +5,7 @@
 using System;
 using System.ComponentModel;
 using System.Text.Json;
+
 #if ELASTICSEARCH_SERVERLESS
 using Elastic.Clients.Elasticsearch.Serverless.Serialization;
 #else
@@ -40,7 +41,7 @@ internal RequestDescriptor(Func<RouteValues, RouteValues> pathSelector) : base(p
 
 	protected TDescriptor Self => _descriptor;
 
-	protected TDescriptor Qs(string name, object value)
+	protected TDescriptor Qs(string name, object? value)
 	{
 		Q(name, value);
 		return _descriptor;
@@ -64,6 +65,22 @@ public TDescriptor RequestConfiguration(
 		return _descriptor;
 	}
 
+	/// <summary>
+	/// A list of filters used to reduce the response.
+	/// <para>
+	///     Use of response filtering can result in a response from Elasticsearch
+	///     that cannot be correctly deserialized to the respective response type for the request.
+	///     In such situations, use the low level client to issue the request and handle response deserialization.
+	/// </para>
+	/// </summary>
+	public TDescriptor FilterPath(params string[] value) => Qs("filter_path", value);
+
+	///<summary>Return human-readable values for statistics.</summary>
+	public TDescriptor Human(bool? value) => Qs("human", value);
+
+	///<summary>Pretty format the returned JSON response.</summary>
+	public TDescriptor Pretty(bool? value) => Qs("pretty", value);
+
 	/// <summary>
 	///     Hides the <see cref="ToString" /> method.
 	/// </summary>