Use Fields type for Field|Field[] and Field[] (#8084) (#8086)

Co-authored-by: Florian Bernd <git@flobernd.de>

Author: github-actions[bot]

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/AsyncSearch/SubmitAsyncSearchRequest.g.cs

@@ -911,6 +911,7 @@ public SubmitAsyncSearchRequest(Elastic.Clients.Elasticsearch.Serverless.Indices
 	/// <para>List of stored fields to return as part of a hit. If no fields are specified,<br/>no stored fields are included in the response. If this field is specified, the _source<br/>parameter defaults to false. You can pass _source: true to return both source fields<br/>and stored fields in the search response.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("stored_fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? StoredFields { get; set; }
 	[JsonInclude, JsonPropertyName("suggest")]
 	public Elastic.Clients.Elasticsearch.Serverless.Core.Search.Suggester? Suggest { get; set; }

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/FieldCapsRequest.g.cs

@@ -134,6 +134,7 @@ public FieldCapsRequest(Elastic.Clients.Elasticsearch.Serverless.Indices? indice
 	/// <para>List of fields to retrieve capabilities for. Wildcard (`*`) expressions are supported.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? Fields { get; set; }
 
 	/// <summary>

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/SearchMvtRequest.g.cs

@@ -79,6 +79,7 @@ public SearchMvtRequest(Elastic.Clients.Elasticsearch.Serverless.Indices indices
 	/// <para>Fields to return in the `hits` layer. Supports wildcards (`*`).<br/>This parameter does not support fields with array values. Fields with array<br/>values may return inconsistent results.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? Fields { get; set; }
 
 	/// <summary>

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/SearchRequest.g.cs

@@ -956,6 +956,7 @@ public SearchRequest(Elastic.Clients.Elasticsearch.Serverless.Indices? indices)
 	/// <para>List of stored fields to return as part of a hit.<br/>If no fields are specified, no stored fields are included in the response.<br/>If this field is specified, the `_source` parameter defaults to `false`.<br/>You can pass `_source: true` to return both source fields and stored fields in the search response.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("stored_fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? StoredFields { get; set; }
 
 	/// <summary>

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Aggregations/MatrixStatsAggregation.g.cs

@@ -33,6 +33,7 @@ public sealed partial class MatrixStatsAggregation
 	/// <para>An array of fields for computing the statistics.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? Fields { get; set; }
 	[JsonInclude, JsonPropertyName("meta")]
 	public IDictionary<string, object>? Meta { get; set; }

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Aggregations/SignificantTextAggregation.g.cs

@@ -133,6 +133,7 @@ public sealed partial class SignificantTextAggregation
 	/// <para>Overrides the JSON `_source` fields from which text will be analyzed.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("source_fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? SourceFields { get; set; }
 
 	public static implicit operator Elastic.Clients.Elasticsearch.Serverless.Aggregations.Aggregation(SignificantTextAggregation significantTextAggregation) => Elastic.Clients.Elasticsearch.Serverless.Aggregations.Aggregation.SignificantText(significantTextAggregation);

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Aggregations/TopHitsAggregation.g.cs

@@ -33,6 +33,7 @@ public sealed partial class TopHitsAggregation
 	/// <para>Fields for which to return doc values.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("docvalue_fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? DocvalueFields { get; set; }
 
 	/// <summary>
@@ -102,6 +103,7 @@ public sealed partial class TopHitsAggregation
 	/// <para>Returns values for the specified stored fields (fields that use the `store` mapping option).</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("stored_fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? StoredFields { get; set; }
 
 	/// <summary>

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Core/MGet/MultiGetOperation.g.cs

@@ -57,6 +57,7 @@ public sealed partial class MultiGetOperation
 	/// <para>The stored fields you want to retrieve.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("stored_fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? StoredFields { get; set; }
 	[JsonInclude, JsonPropertyName("version")]
 	public long? Version { get; set; }

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Core/Mtermvectors/MultiTermVectorsOperation.g.cs

@@ -39,6 +39,7 @@ public sealed partial class MultiTermVectorsOperation
 	/// <para>Comma-separated list or wildcard expressions of fields to include in the statistics.<br/>Used as the default list unless a specific field list is provided in the `completion_fields` or `fielddata_fields` parameters.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("fields")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? Fields { get; set; }
 
 	/// <summary>

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Core/Reindex/Source.g.cs

@@ -68,6 +68,7 @@ public sealed partial class Source
 	/// <para>If `true` reindexes all source fields.<br/>Set to a list to reindex select fields.</para>
 	/// </summary>
 	[JsonInclude, JsonPropertyName("_source")]
+	[JsonConverter(typeof(SingleOrManyFieldsConverter))]
 	public Elastic.Clients.Elasticsearch.Serverless.Fields? SourceFields { get; set; }
 }