code: def restoreState(self, state):
      if "fields" in state:
          self.setFields(state["fields"])
      for name, itemState in state["items"].items():
          item = self.addNew(itemState["field"])
          item.restoreState(itemState)
  
imports: from collections import OrderedDict
  import numpy
  from ..None import functions
  from ..None import parametertree
  from ..Qt import QtCore
label_desc: Use image node_id 8 for calling the ColorMapParameter obj's underlying member method code with example usage: obj.restoreState(state) without return types