:param data: string data to be parsed.
        :return: Returns an STSElement.
        """
        try:
            return cls(root_name, cElementTree.fromstring(data))
        except _ETREE_EXCEPTIONS as error:
            raise InvalidXMLError(
                '"{}" XML is not parsable. Message: {}'.format(
                    root_name, error.message
                )
            )

		if err := f(); err != nil {
			return err
		}
		// Mark as done only when f() is successful
		atomic.StoreUint32(&l.done, 1)
	}
	return nil
}

// DoWithContext is similar to Do except that it accepts a context as an argument to be passed.
func (l *Init) DoWithContext(ctx context.Context, f func(context.Context) error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.doWithContext(ctx, f)
	}

		}
		switch header {
		case "expect":
			// Golang http server strips off 'Expect' header, if the
			// client sent this as part of signed headers we need to
			// handle otherwise we would see a signature mismatch.
			// `aws-cli` sets this as part of signed headers.
			//
			// According to
			// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.20
			// Expect header is always of form:
			//

Example: Limit a MinIO cluster to accept at max 1600 simultaneous S3 API requests across all nodes of the cluster.

```sh
export MINIO_API_REQUESTS_MAX=1600
export MINIO_ROOT_USER=your-access-key
export MINIO_ROOT_PASSWORD=your-secret-key

import (
	"math/rand"
	"time"
)

func backoffWait(min, unit, cap time.Duration) func(*rand.Rand, uint) time.Duration {
	if unit > time.Hour {
		// Protect against integer overflow
		panic("unit cannot exceed one hour")
	}
	return func(r *rand.Rand, attempt uint) time.Duration {
		sleep := min
		sleep += unit * time.Duration(attempt)
		if sleep > cap {
			sleep = cap
		}

	ImportKey(ctx context.Context, keyID string, bytes []byte) error

	// EncryptKey Encrypts and authenticates a (small) plaintext with the cryptographic key
	// The plaintext must not exceed 1 MB
	EncryptKey(keyID string, plaintext []byte, context Context) ([]byte, error)

	// HMAC computes the HMAC of the given msg and key with the given
	// key ID.

/*
 * MinIO Object Storage (c) 2021 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

- Creation and deletion of buckets and objects
- Creation and deletion of all IAM users, groups, policies and their mappings to users or groups
- Creation of STS credentials
- Creation and deletion of service accounts (except those owned by the root user)
- Changes to Bucket features such as:
  - Bucket Policies
  - Bucket Tags
  - Bucket Object-Lock configurations (including retention and legal hold configuration)

/*
 * MinIO Object Storage (c) 2021 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

/*
 * MinIO Object Storage (c) 2021-2023 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,