code: def setAlpha(self, alpha):
      self.alphaSlider.setValue(
          int(fn.clip_scalar(alpha * 1023, 0, 1023))
      )
  
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 14 for calling the CanvasItem obj's underlying member method code with example usage: obj.setAlpha(alpha) without return types