Support both aggregation response shapes for metric tag configurations

.generator/schemas/v2/openapi.yaml

@@ -61652,6 +61652,26 @@ components:
             $ref: "#/components/schemas/MetricAssetResponseIncluded"
           type: array
       type: object
+    MetricAvailableAggrFunctions:
+      description: A single aggregation function used to query a metric.
+      enum:
+        - avg
+        - min
+        - max
+        - sum
+        - count
+        - stddev
+        - pxx
+      example: avg
+      type: string
+      x-enum-varnames:
+        - AVG
+        - MIN
+        - MAX
+        - SUM
+        - COUNT
+        - STDDEV
+        - PXX
     MetricBulkConfigureTagsType:
       default: metric_bulk_configure_tags
       description: The metric bulk configure tags resource.
@@ -61830,14 +61850,26 @@ components:
     MetricCustomAggregations:
       description: |-
         Deprecated. You no longer need to configure specific time and space aggregations for Metrics Without Limits.
-      example:
-        - space: sum
-          time: sum
-        - space: sum
-          time: count
-      items:
-        $ref: "#/components/schemas/MetricCustomAggregation"
-      type: array
+      oneOf:
+        - example:
+            - space: sum
+              time: sum
+            - space: sum
+              time: count
+          items:
+            $ref: "#/components/schemas/MetricCustomAggregation"
+          type: array
+        - example:
+            - avg
+            - min
+            - max
+            - sum
+            - count
+            - stddev
+            - pxx
+          items:
+            $ref: "#/components/schemas/MetricAvailableAggrFunctions"
+          type: array
     MetricCustomSpaceAggregation:
       description: A space aggregation for use in query.
       enum:

src/main/java/com/datadog/api/client/v2/model/MetricAvailableAggrFunctions.java

@@ -0,0 +1,64 @@
+/*
+ * Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ * This product includes software developed at Datadog (https://www.datadoghq.com/).
+ * Copyright 2019-Present Datadog, Inc.
+ */
+
+package com.datadog.api.client.v2.model;
+
+import com.datadog.api.client.ModelEnum;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+/** A single aggregation function used to query a metric. */
+@JsonSerialize(using = MetricAvailableAggrFunctions.MetricAvailableAggrFunctionsSerializer.class)
+public class MetricAvailableAggrFunctions extends ModelEnum<String> {
+
+  private static final Set<String> allowedValues =
+      new HashSet<String>(Arrays.asList("avg", "min", "max", "sum", "count", "stddev", "pxx"));
+
+  public static final MetricAvailableAggrFunctions AVG = new MetricAvailableAggrFunctions("avg");
+  public static final MetricAvailableAggrFunctions MIN = new MetricAvailableAggrFunctions("min");
+  public static final MetricAvailableAggrFunctions MAX = new MetricAvailableAggrFunctions("max");
+  public static final MetricAvailableAggrFunctions SUM = new MetricAvailableAggrFunctions("sum");
+  public static final MetricAvailableAggrFunctions COUNT =
+      new MetricAvailableAggrFunctions("count");
+  public static final MetricAvailableAggrFunctions STDDEV =
+      new MetricAvailableAggrFunctions("stddev");
+  public static final MetricAvailableAggrFunctions PXX = new MetricAvailableAggrFunctions("pxx");
+
+  MetricAvailableAggrFunctions(String value) {
+    super(value, allowedValues);
+  }
+
+  public static class MetricAvailableAggrFunctionsSerializer
+      extends StdSerializer<MetricAvailableAggrFunctions> {
+    public MetricAvailableAggrFunctionsSerializer(Class<MetricAvailableAggrFunctions> t) {
+      super(t);
+    }
+
+    public MetricAvailableAggrFunctionsSerializer() {
+      this(null);
+    }
+
+    @Override
+    public void serialize(
+        MetricAvailableAggrFunctions value, JsonGenerator jgen, SerializerProvider provider)
+        throws IOException, JsonProcessingException {
+      jgen.writeObject(value.value);
+    }
+  }
+
+  @JsonCreator
+  public static MetricAvailableAggrFunctions fromValue(String value) {
+    return new MetricAvailableAggrFunctions(value);
+  }
+}