type concErr struct {
	errMap     map[string]error
	summaryErr error
}

func (c concErr) Error() string {
	if c.summaryErr != nil {
		return c.summaryErr.Error()
	}
	return "<nil>"
}

func (c concErr) Unwrap() error {
	return c.summaryErr
}

func (c *SiteReplicationSys) toErrorFromErrMap(errMap map[string]error, actionName string) error {
	if len(errMap) == 0 {
		return nil

	if err != nil {
		err = msgp.WrapError(err, "Metrics")
		return
	}
	z.Error, err = dc.ReadString()
	if err != nil {
		err = msgp.WrapError(err, "Error")
		return
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *DiskInfo) EncodeMsg(en *msgp.Writer) (err error) {
	// array header, size 18
	err = en.Append(0xdc, 0x0, 0x12)
	if err != nil {
		return
	}

   ]
  }
 ]
}`)
	err = s.adm.AddCannedPolicy(ctx, policy, policyBytes)
	if err != nil {
		c.Fatalf("policy add error: %v", err)
	}

	if err = s.adm.AddUser(ctx, "dillon", "dillon-123"); err != nil {
		c.Fatalf("policy add error: %v", err)
	}

	_, err = s.adm.AttachPolicy(ctx, madmin.PolicyAssociationReq{
		Policies: []string{policy},
		User:     "dillon",
	})

					var errXML APIErrorResponse
					err = xml.Unmarshal(errBytes, &errXML)
					if err != nil {
						t.Fatalf("%s, Failed to unmarshal error response from upload part request \"%s\"/\"%s\": <ERROR> %v.",
							reqType, bucketName, test.objectName, err)
					}
					// Validate whether the error has occurred for the expected reason.
					if want.Code != errXML.Code {

     * @throws IOException if an I/O error occurs
     */
    public ACE[] getSecurity() throws IOException {
        return getSecurity(false);
    }

    /**
     * Returns the owner user SID for this file
     *
     * @return the owner user SID
     * @throws IOException if an I/O error occurs
     */
    public SID getOwnerUser() throws IOException {

		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL)
		return
	}

	opts, err := getOpts(ctx, r, bucket, object)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Check for auth type to return S3 compatible error.
	// type to return the correct error (NoSuchKey vs AccessDenied)

		// Ignore the error, since we know the object exists and versioning prevents overwriting existing versions.
		if isSSEC && strings.Contains(cerr.Error(), errorCodes[ErrSSEEncryptedObject].Description) {
			rinfo.ReplicationStatus = replication.Completed
			rinfo.ReplicationAction = replicateNone
			goto applyAction
		}
		// if target returns error other than NoSuchKey, defer replication attempt

    runExpectedExceptionCatchingAsyncTest(expectedException, false);
  }

  public void testCatchingAsync_fallbackGeneratesError() throws Exception {
    Error error = new Error("deliberate");
    AsyncFunction<Throwable, Integer> fallback =
        unused -> {
          throw error;
        };
    ListenableFuture<Integer> failingFuture = immediateFailedFuture(new RuntimeException());
    ExecutionException expected =

    runExpectedExceptionCatchingAsyncTest(expectedException, false);
  }

  public void testCatchingAsync_fallbackGeneratesError() throws Exception {
    Error error = new Error("deliberate");
    AsyncFunction<Throwable, Integer> fallback =
        unused -> {
          throw error;
        };
    ListenableFuture<Integer> failingFuture = immediateFailedFuture(new RuntimeException());
    ExecutionException expected =

                    valid, that would mean a violation of the contract with the client,
                    so it's an error from the API developer. So, FastAPI will raise an
                    error and return a 500 error code (Internal Server Error).

                Read more about it in the
                [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).