code: def get_sideplot_ranges(plot, element, main, ranges):
      
      key = plot.current_key
      dims = element.dimensions()
      dim = dims[0] if 'frequency' in dims[1].name else dims[1]
      range_item = main
      if isinstance(main, HoloMap):
          if issubclass(main.type, CompositeOverlay):
              range_item = [hm for hm in main._split_overlays()[1]
                            if dim in hm.dimensions('all')][0]
      else:
          range_item = HoloMap({0: main}, kdims=['Frame'])
          ranges = match_spec(range_item.last, ranges)
  
      if dim.name in ranges:
          main_range = ranges[dim.name]['combined']
      else:
          framewise = plot.lookup_options(range_item.last, 'norm').options.get('framewise')
          if framewise and range_item.get(key, False):
              main_range = range_item[key].range(dim)
          else:
              main_range = range_item.range(dim)
  
      # If .main is an NdOverlay or a HoloMap of Overlays get the correct style
      if isinstance(range_item, HoloMap):
          range_item = range_item.last
      if isinstance(range_item, CompositeOverlay):
          range_item = [ov for ov in range_item
                        if dim in ov.dimensions('all')][0]
      return range_item, main_range, dim
docs: Utility to find the range for an adjoined
      plot given the plot, the element, the
      Element the plot is adjoined to and the
      dictionary of ranges.