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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 _secret_event_value_changed_cb(conn, secret, opaque):
    '''
    Secret value change events handler
    '''
    _salt_send_event(opaque, conn, {
        'secret': {
            'uuid': secret.UUIDString()
        },
        'event': opaque['event']
    })