Re-implement Exists property (#8102) (#8104)

Co-authored-by: Florian Bernd <[email protected]>

src/Elastic.Clients.Elasticsearch.Shared/Api/ExistsResponse.cs

@@ -0,0 +1,19 @@
+// Licensed to Elasticsearch B.V under one or more agreements.
+// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using Elastic.Transport.Products.Elasticsearch;
+
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.Serverless;
+#else
+namespace Elastic.Clients.Elasticsearch;
+#endif
+
+public sealed partial class ExistsResponse : ElasticsearchResponse
+{
+	public bool Exists => ApiCallDetails is
+	{
+		HasSuccessfulStatusCode: true, HttpStatusCode: 200
+	};
+}

src/Elastic.Clients.Elasticsearch.Shared/Api/ExistsSourceResponse.cs

@@ -0,0 +1,19 @@
+// Licensed to Elasticsearch B.V under one or more agreements.
+// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using Elastic.Transport.Products.Elasticsearch;
+
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.Serverless;
+#else
+namespace Elastic.Clients.Elasticsearch;
+#endif
+
+public sealed partial class ExistsSourceResponse : ElasticsearchResponse
+{
+	public bool Exists => ApiCallDetails is
+	{
+		HasSuccessfulStatusCode: true, HttpStatusCode: 200
+	};
+}

src/Elastic.Clients.Elasticsearch.Shared/Api/IndexManagement/ExistsAliasResponse.cs

@@ -0,0 +1,19 @@
+// Licensed to Elasticsearch B.V under one or more agreements.
+// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using Elastic.Transport.Products.Elasticsearch;
+
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.IndexManagement.Serverless;
+#else
+namespace Elastic.Clients.Elasticsearch.IndexManagement;
+#endif
+
+public sealed partial class ExistsAliasResponse : ElasticsearchResponse
+{
+	public bool Exists => ApiCallDetails is
+	{
+		HasSuccessfulStatusCode: true, HttpStatusCode: 200
+	};
+}

src/Elastic.Clients.Elasticsearch.Shared/Api/IndexManagement/ExistsIndexTemplateResponse.cs

@@ -0,0 +1,19 @@
+// Licensed to Elasticsearch B.V under one or more agreements.
+// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using Elastic.Transport.Products.Elasticsearch;
+
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.IndexManagement.Serverless;
+#else
+namespace Elastic.Clients.Elasticsearch.IndexManagement;
+#endif
+
+public sealed partial class ExistsIndexTemplateResponse : ElasticsearchResponse
+{
+	public bool Exists => ApiCallDetails is
+	{
+		HasSuccessfulStatusCode: true, HttpStatusCode: 200
+	};
+}

src/Elastic.Clients.Elasticsearch.Shared/Api/IndexManagement/ExistsResponse.cs

@@ -0,0 +1,19 @@
+// Licensed to Elasticsearch B.V under one or more agreements.
+// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using Elastic.Transport.Products.Elasticsearch;
+
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.Serverless.IndexManagement;
+#else
+namespace Elastic.Clients.Elasticsearch.IndexManagement;
+#endif
+
+public sealed partial class ExistsResponse : ElasticsearchResponse
+{
+	public bool Exists => ApiCallDetails is
+	{
+		HasSuccessfulStatusCode: true, HttpStatusCode: 200
+	};
+}

src/Elastic.Clients.Elasticsearch.Shared/Api/IndexManagement/ExistsTemplateResponse.cs

@@ -0,0 +1,19 @@
+// Licensed to Elasticsearch B.V under one or more agreements.
+// Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using Elastic.Transport.Products.Elasticsearch;
+
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.IndexManagement.Serverless;
+#else
+namespace Elastic.Clients.Elasticsearch.IndexManagement;
+#endif
+
+public sealed partial class ExistsTemplateResponse : ElasticsearchResponse
+{
+	public bool Exists => ApiCallDetails is
+	{
+		HasSuccessfulStatusCode: true, HttpStatusCode: 200
+	};
+}