code: def setHostName(self, name):
      self.hostName = name
      self.updateCanvasList()
  
file_path: pyqtgraph/pyqtgraph/canvas/CanvasManager.py
imports: from ..Qt import QtCore, QtWidgets
  import weakref
label_desc: Use image node_id 3 for calling the CanvasCombo obj's underlying member method code with example usage: obj.setHostName(name) without return types