def _do_pi(self, node):
        if not _in_subset(self.subset, node): return
        W = self.write
        if self.documentOrder == _GreaterElement: W('\n')
        W('<?')
        W(node.nodeName)
        s = node.data
        if s:
            W(' ')
            W(s)
        W('?>')
        if self.documentOrder == _LesserElement: W('\n')
Publish realtime that the current document is modified
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/SOAPpy/wstools/c14n.py/_implementation._do_pi--crossover with--dataset/ETHPy150Open frappe/frappe/frappe/model/document.py/Document.notify_update