def accept(self, visitor):
        self.left.accept(visitor)
        self.right.accept(visitor)
        visitor.visit(self)
Convert the headers from a tuple to a dictionary
dataset/ETHPy150Open uwescience/raco/raco/expression/expression.py/BinaryOperator.accept--crossover with--dataset/ETHPy150Open haystack/eyebrowse-server/common/middleware/proxy.py/_pack_headers