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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def exists(DomainName,
           region=None, key=None, keyid=None, profile=None):
    '''
    Given a domain name, check to see if the given domain exists.

    Returns True if the given domain exists and returns False if the given
    function does not exist.

    CLI Example:

    .. code-block:: bash

        salt myminion boto_elasticsearch_domain.exists mydomain

    '''

    conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
    try:
        domain = conn.describe_elasticsearch_domain(DomainName=DomainName)
        return {'exists': True}
    except ClientError as e:
        if e.response.get('Error', {}).get('Code') == 'ResourceNotFoundException':
            return {'exists': False}
        return {'error': __utils__['boto3.get_error'](e)}