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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 _pool_event_refresh_cb(conn, pool, opaque):
    '''
    Storage pool refresh events handler
    '''
    _salt_send_event(opaque, conn, {
        'pool': {
            'name': pool.name(),
            'uuid': pool.UUIDString()
        },
        'event': opaque['event']
    })