class_docstr: QWidget wrapper for :class:`~pyqtgraph.HistogramLUTItem`.
  
  All parameters are passed along in creating the HistogramLUTItem.
code: def sizeHint(self):
      if self.orientation == "vertical":
          return QtCore.QSize(115, 200)
      else:
          return QtCore.QSize(200, 115)
  
file_path: pyqtgraph/pyqtgraph/widgets/HistogramLUTWidget.py
imports: from ..graphicsItems.HistogramLUTItem import HistogramLUTItem
  from ..Qt import QtCore, QtWidgets
  from .GraphicsView import GraphicsView
label_desc: Use image node_id 2 for calling the HistogramLUTWidget obj's underlying member method code with example usage: obj.sizeHint() and returns: QtCore, QtCore