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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_event(name, details, service_key, profile):
    '''
    Create an event on the PagerDuty service

    .. code-block:: yaml

        server-warning-message:
          pagerduty.create_event:
            - name: 'This is a server warning message'
            - details: 'This is a much more detailed message'
            - service_key: 9abcd123456789efabcde362783cdbaf
            - profile: my-pagerduty-account

    The following parameters are required:

    name
        This is a short description of the event.

    details
        This can be a more detailed description of the event.

    service_key
        This key can be found by using pagerduty.list_services.

    profile
        This refers to the configuration profile to use to connect to the
        PagerDuty service.
    '''
    ret = {'name': name,
           'changes': {},
           'result': None,
           'comment': ''}
    if __opts__['test']:
        ret['comment'] = 'Need to create event: {0}'.format(name)
        return ret
    __salt__['pagerduty.create_event'](
        description=name,
        details=details,
        service_key=service_key,
        profile=profile,
    )
    ret['result'] = True
    ret['comment'] = 'Created event: {0}'.format(name)
    return ret