def __iadd__(self, node):

        self.stream.add(node)
        if self.node:
            self.stream.connect(self.node, node)
        self.node = node

        return self
Appends a node to the actual stream. The new node becomes actual node of the
dataset/ETHPy150Open Stiivi/brewery/brewery/streams.py/_StreamFork.__iadd__