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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 create_contentkey_authorization_policy(access_token, content):
    '''Create Media Service Content Key Authorization Policy.

    Args:
        access_token (str): A valid Azure authentication token.
        content (str): Content Payload.

    Returns:
        HTTP response. JSON body.
    '''
    path = '/ContentKeyAuthorizationPolicies'
    endpoint = ''.join([ams_rest_endpoint, path])
    body = content
    return do_ams_post(endpoint, path, body, access_token)