class_docstr: Concatenates record arrays and/or adds new columns
class_docstr_tok: ["Concatenates","record","arrays","and\/or","adds","new","columns"]
code: def saveState(self):
      state = Node.saveState(self)
      state["order"] = self.order()
      return state
  
imports: import numpy
  from ...graphicsItems.LinearRegionItem import LinearRegionItem
  from ...Qt import QtCore, QtWidgets
  from ...widgets.TreeWidget import TreeWidget
  from ..Node import Node
  from .None import functions
  from .common import CtrlNode
label_desc: Use image node_id 7 for calling the ColumnJoinNode obj's underlying member method code with example usage: obj.saveState() and returns: state