def validate( self, validateTrace=[] ):
        if self not in validateTrace:
            tmp = validateTrace[:]+[self]
            if self.expr is not None:
                self.expr.validate(tmp)
        self.checkRecursion([])
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/pyparsing.py/Forward.validate/original