code: def show(self):
      if self.opts["visible"]:
          return
      self.opts["visible"] = True
      self._graphicsItem.show()
      self.showSelectBox()
      self.sigVisibilityChanged.emit(self)
  
imports: import importlib
  from ..None import ItemGroup, SRTTransform, debug
  from ..None import functions
  from ..graphicsItems.ROI import ROI
  from ..Qt import QT_LIB, QtCore, QtWidgets
  from .None import TransformGuiTemplate_generic
label_desc: Use image node_id 45 for calling the CanvasItem obj's underlying member method code with example usage: obj.show() without return types