code: def init_layout(self, key, element, ranges, **kwargs):
      layout = super().init_layout(key, element, ranges)
      layout["barmode"] = "overlay"
      return layout
  
imports: import numpy
  import param
  from ...element import Tiles
  from ...operation import interpolate_curve
  from ..mixins import AreaMixin, BarsMixin
  from .element import ColorbarPlot, ElementPlot
  from .selection import PlotlyOverlaySelectionDisplay
label_desc: Use image node_id 3 for calling the HistogramPlot obj's underlying member method code with example usage: obj.init_layout(key, element, ranges) and returns: layout