writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	api.getObjectAttributesHandler(ctx, objectAPI, bucket, object, w, r)
}

// HeadObjectHandler - HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (api objectAPIHandlers) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "HeadObject")

                .named("ImmutableIntArray.asList"),
            ListTestSuiteBuilder.using(new ImmutableIntArrayHeadSubListAsListGenerator())
                .named("ImmutableIntArray.asList, head subList"),
            ListTestSuiteBuilder.using(new ImmutableIntArrayTailSubListAsListGenerator())
                .named("ImmutableIntArray.asList, tail subList"),

            .createTestSuite());
    suite.addTest(
        ListTestSuiteBuilder.using(new ImmutableListHeadSubListGenerator())
            .named("ImmutableList, head subList")
            .withFeatures(CollectionSize.ANY, SERIALIZABLE, ALLOWS_NULL_QUERIES)
            .createTestSuite());
    suite.addTest(
        ListTestSuiteBuilder.using(new ImmutableListTailSubListGenerator())

                .named("ImmutableDoubleArray.asList"),
            ListTestSuiteBuilder.using(new ImmutableDoubleArrayHeadSubListAsListGenerator())
                .named("ImmutableDoubleArray.asList, head subList"),
            ListTestSuiteBuilder.using(new ImmutableDoubleArrayTailSubListAsListGenerator())
                .named("ImmutableDoubleArray.asList, tail subList"),

 *
 * Every [edit] call must be matched by a call to [Editor.commit] or [Editor.abort]. Committing is
 * atomic: a read observes the full set of values as they were before or after the commit, but never
 * a mix of values.
 *
 * Clients call [get] to read a snapshot of an entry. The read will observe the value at the time
 * that [get] was called. Updates and removals after the call do not impact ongoing reads.
 *

            .createTestSuite());
    suite.addTest(
        ListTestSuiteBuilder.using(new ImmutableListHeadSubListGenerator())
            .named("ImmutableList, head subList")
            .withFeatures(CollectionSize.ANY, SERIALIZABLE, ALLOWS_NULL_QUERIES)
            .createTestSuite());
    suite.addTest(
        ListTestSuiteBuilder.using(new ImmutableListTailSubListGenerator())

          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{bucket}}",
          "refId": "A"
        }
      ],
      "title": "Total Proxied Head Requests",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {

    builder = builder.removeHeader("")
    builder = builder.headers(headersOf())
    builder = builder.cacheControl(CacheControl.FORCE_CACHE)
    builder = builder.get()
    builder = builder.head()
    builder = builder.post(requestBody)
    builder = builder.delete(requestBody)
    builder = builder.delete(null)
    builder = builder.put(requestBody)
    builder = builder.patch(requestBody)

		},
	}

	for i, testCase := range testCases {
		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
		rec := httptest.NewRecorder()
		// construct HTTP request for HEAD bucket.
		req, err := newTestSignedRequestV4(http.MethodHead, getHEADBucketURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
		if err != nil {

      }
      return null
    }

    if (requestMethod != "GET" && requestMethod != "QUERY") {
      // Don't cache non-GET and non-QUERY responses. We're technically allowed to cache HEAD
      // requests and some POST requests, but the complexity of doing so is high and the benefit
      // is low.
      return null
    }

    if (response.hasVaryAll()) {
      return null
    }