def delete_access_key(UserName=None, AccessKeyId=None):
    """
    Deletes the access key pair associated with the specified IAM user.
    If you do not specify a user name, IAM determines the user name implicitly based on the AWS access key ID signing the request. Because this action works for access keys under the AWS account, you can use this action to manage root credentials even if the AWS account has no associated users.
    See also: AWS API Documentation
    
    Examples
    The following command deletes one access key (access key ID and secret access key) assigned to the IAM user named Bob.
    Expected Output:
    
    :example: response = client.delete_access_key(
        UserName='string',
        AccessKeyId='string'
    )
    
    
    :type UserName: string
    :param UserName: The name of the user whose access key pair you want to delete.
            This parameter allows (per its regex pattern ) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: =,.@-
            

    :type AccessKeyId: string
    :param AccessKeyId: [REQUIRED]
            The access key ID for the access key ID and secret access key you want to delete.
            This parameter allows (per its regex pattern ) a string of characters that can consist of any upper or lowercased letter or digit.
            

    :return: response = client.delete_access_key(
        AccessKeyId='AKIDPMS9RO4H3FEXAMPLE',
        UserName='Bob',
    )
    
    print(response)
    
    
    """
    pass
