Return a list of (prop, (form, valu)) refs out for the node.

def getNodeRefs(self):
        '''
        Return a list of (prop, (form, valu)) refs out for the node.
        '''
        retn = []

        for name, valu in self.props.items():

            pobj = self.form.props.get(name)

            if isinstance(pobj.type, s_types.Ndef):
                retn.append((name, valu))
                continue

            if self.snap.model.forms.get(pobj.type.name) is None:
                continue

            ndef = (pobj.type.name, valu)
            if ndef == self.ndef:
                continue

            retn.append((name, ndef))

        return retn