def addExistingDagNode(self, dagNode, position):
        newNode = DrawNode(dagNode)
        self.addItem(newNode)
        newNode.setPos(position)
        return newNode
Adds a new draw node for a given dag node at a given position.
dataset/ETHPy150Open andrew-gardner/dependsworkflow/depends/depends_graphics_widgets.py/SceneWidget.addExistingDagNode