code: def getMenu(self):
      if self._menu is None:
          self._menu = ColorMapMenu()
          self._menu.triggered.connect(self.menuTriggered)
      return self._menu
  
imports: import importlib.util
  import re
  import numpy
  from ..None import colormap
  from ..None import functions
  from ..graphicsItems.GradientPresets import Gradients
  from ..Qt import QtCore, QtGui, QtWidgets
label_desc: Use image node_id 7 for calling the ColorMapDisplayMixin obj's underlying member method code with example usage: obj.getMenu() and returns: self