code: def __init__(
      self, plotly_name="histnorm", parent_name="histogram2d", **kwargs
  ):
      super(HistnormValidator, self).__init__(
          plotly_name=plotly_name,
          parent_name=parent_name,
          edit_type=kwargs.pop("edit_type", "calc"),
          values=kwargs.pop(
              "values",
              [
                  "",
                  "percent",
                  "probability",
                  "density",
                  "probability density",
              ],
          ),
          **kwargs,
      )
  
label_desc: Use image node_id 1 to create a new HistnormValidator object from inherited base classes: _plotly_utils.basevalidators with example: obj = HistnormValidator(plotly_name, parent_name)