code: def __init__(self, plotly_name="marker", parent_name="bar", **kwargs):
      super(MarkerValidator, self).__init__(
          plotly_name=plotly_name,
          parent_name=parent_name,
          data_class_str=kwargs.pop("data_class_str", "Marker"),
          data_docs=kwargs.pop(
              "data_docs",
              """
              autocolorscale
                  Determines whether the colorscale is a default
                  palette (`autocolorscale: true`) or the palette
                  determined by `marker.colorscale`. Has an
                  effect only if in `marker.color` is set to a
                  numerical array. In case `colorscale` is
                  unspecified or `autocolorscale` is true, the
                  default palette will be chosen according to
                  whether numbers in the `color` array are all
                  positive, all negative or mixed.
              cauto
                  Determines whether or not the color domain is
                  computed with respect to the input data (here
                  in `marker.color`) or the bounds set in
                  `marker.cmin` and `marker.cmax` Has an effect
                  only if in `marker.color` is set to a numerical
                  array. Defaults to `false` when `marker.cmin`
                  and `marker.cmax` are set by the user.
              cmax
                  Sets the upper bound of the color domain. Has
                  an effect only if in `marker.color` is set to a
                  numerical array. Value should have the same
                  units as in `marker.color` and if set,
                  `marker.cmin` must be set as well.
              cmid
                  Sets the mid-point of the color domain by
                  scaling `marker.cmin` and/or `marker.cmax` to
                  be equidistant to this point. Has an effect
                  only if in `marker.color` is set to a numerical
                  array. Value should have the same units as in
                  `marker.color`. Has no effect when
                  `marker.cauto` is `false`.
              cmin
                  Sets the lower bound of the color domain. Has
                  an effect only if in `marker.color` is set to a
                  numerical array. Value should have the same
                  units as in `marker.color` and if set,
                  `marker.cmax` must be set as well.
              color
                  Sets the marker color. It accepts either a
                  specific color or an array of numbers that are
                  mapped to the colorscale relative to the max
                  and min values of the array or relative to
                  `marker.cmin` and `marker.cmax` if set.
              coloraxis
                  Sets a reference to a shared color axis.
                  References to these shared color axes are
                  "coloraxis", "coloraxis2", "coloraxis3", etc.
                  Settings for these shared color axes are set in
                  the layout, under `layout.coloraxis`,
                  `layout.coloraxis2`, etc. Note that multiple
                  color scales can be linked to the same color
                  axis.
              colorbar
                  :class:`plotly.graph_objects.bar.marker.ColorBa
                  r` instance or dict with compatible properties
              colorscale
                  Sets the colorscale. Has an effect only if in
                  `marker.color` is set to a numerical array. The
                  colorscale must be an array containing arrays
                  mapping a normalized value to an rgb, rgba,
                  hex, hsl, hsv, or named color string. At
                  minimum, a mapping for the lowest (0) and
                  highest (1) values are required. For example,
                  `[[0, 'rgb(0,0,255)'], [1, 'rgb(255,0,0)']]`.
                  To control the bounds of the colorscale in
                  color space, use `marker.cmin` and
                  `marker.cmax`. Alternatively, `colorscale` may
                  be a palette name string of the following list:
                  Blackbody,Bluered,Blues,Cividis,Earth,Electric,
                  Greens,Greys,Hot,Jet,Picnic,Portland,Rainbow,Rd
                  Bu,Reds,Viridis,YlGnBu,YlOrRd.
              colorsrc
                  Sets the source reference on Chart Studio Cloud
                  for `color`.
              line
                  :class:`plotly.graph_objects.bar.marker.Line`
                  instance or dict with compatible properties
              opacity
                  Sets the opacity of the bars.
              opacitysrc
                  Sets the source reference on Chart Studio Cloud
                  for `opacity`.
              pattern
                  Sets the pattern within the marker.
              reversescale
                  Reverses the color mapping if true. Has an
                  effect only if in `marker.color` is set to a
                  numerical array. If true, `marker.cmin` will
                  correspond to the last color in the array and
                  `marker.cmax` will correspond to the first
                  color.
              showscale
                  Determines whether or not a colorbar is
                  displayed for this trace. Has an effect only if
                  in `marker.color` is set to a numerical array.
  """,
          ),
          **kwargs,
      )
  
imports: import _plotly_utils.basevalidators
label_desc: Use image node_id 1 to create a new MarkerValidator object from inherited base classes: _plotly_utils.basevalidators with example: obj = MarkerValidator(plotly_name, parent_name)