code: def __init__(self, *, orientation):
      self.horizontal = orientation == "horizontal"
      self._menu = None
      self._setColorMap(None)
  
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 1 to create a new ColorMapDisplayMixin object  with example: obj = ColorMapDisplayMixin()