code: def _prop_descriptions(self):
      return """\
          color
              Sets the `node` color. It can be a single value, or an
              array for specifying color for each `node`. If
              `node.color` is omitted, then the default `Plotly`
              color palette will be cycled through to have a variety
              of colors. These defaults are not fully opaque, to
              allow some visibility of what is beneath the node.
          colorsrc
              Sets the source reference on Chart Studio Cloud for
              color .
          customdata
              Assigns extra data to each node.
          customdatasrc
              Sets the source reference on Chart Studio Cloud for
              customdata .
          groups
              Groups of nodes. Each group is defined by an array with
              the indices of the nodes it contains. Multiple groups
              can be specified.
          hoverinfo
              Determines which trace information appear when hovering
              nodes. If `none` or `skip` are set, no information is
              displayed upon hovering. But, if `none` is set, click
              and hover events are still fired.
          hoverlabel
              :class:`plotly.graph_objects.sankey.node.Hoverlabel`
              instance or dict with compatible properties
          hovertemplate
              Template string used for rendering the information that
              appear on hover box. Note that this will override
              `hoverinfo`. Variables are inserted using %{variable},
              for example "y: %{y}". Numbers are formatted using
              d3-format's syntax %{variable:d3-format}, for example
              "Price: %{y:$.2f}". https://github.com/d3/d3-3.x-api-
              reference/blob/master/Formatting.md#d3_format for
              details on the formatting syntax. Dates are formatted
              using d3-time-format's syntax %{variable|d3-time-
              format}, for example "Day: %{2019-01-01|%A}".
              https://github.com/d3/d3-time-format#locale_format for
              details on the date formatting syntax. The variables
              available in `hovertemplate` are the ones emitted as
              event data described at this link
              https://plotly.com/javascript/plotlyjs-events/#event-
              data. Additionally, every attributes that can be
              specified per-point (the ones that are `arrayOk: true`)
              are available. variables `value` and `label`. Anything
              contained in tag `<extra>` is displayed in the
              secondary box, for example
              "<extra>{fullData.name}</extra>". To hide the secondary
              box completely, use an empty tag `<extra></extra>`.
          hovertemplatesrc
              Sets the source reference on Chart Studio Cloud for
              hovertemplate .
          label
              The shown name of the node.
          labelsrc
              Sets the source reference on Chart Studio Cloud for
              label .
          line
              :class:`plotly.graph_objects.sankey.node.Line` instance
              or dict with compatible properties
          pad
              Sets the padding (in px) between the `nodes`.
          thickness
              Sets the thickness (in px) of the `nodes`.
          x
              The normalized horizontal position of the node.
          xsrc
              Sets the source reference on Chart Studio Cloud for  x
              .
          y
              The normalized vertical position of the node.
          ysrc
              Sets the source reference on Chart Studio Cloud for  y
              .
          """
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 37 for calling the Node obj's underlying member method code with example usage: obj._prop_descriptions() and returns: str