docstr: Sets the font used in hover labels.
  
  The 'font' property is an instance of Font
  that may be specified as:
    - An instance of :class:`plotly.graph_objs.sankey.link.hoverlabel.Font`
    - A dict of string/value properties that will be passed
      to the Font constructor
  
      Supported dict properties:
  
          color
  
          colorsrc
              Sets the source reference on Chart Studio Cloud
              for `color`.
          family
              HTML font family - the typeface that will be
              applied by the web browser. The web browser
              will only be able to apply a font if it is
              available on the system which it operates.
              Provide multiple font families, separated by
              commas, to indicate the preference in which to
              apply fonts if they aren't available on the
              system. The Chart Studio Cloud (at
              https://chart-studio.plotly.com or on-premise)
              generates images on a server, where only a
              select number of fonts are installed and
              supported. These include "Arial", "Balto",
              "Courier New", "Droid Sans",, "Droid Serif",
              "Droid Sans Mono", "Gravitas One", "Old
              Standard TT", "Open Sans", "Overpass", "PT Sans
              Narrow", "Raleway", "Times New Roman".
          familysrc
              Sets the source reference on Chart Studio Cloud
              for `family`.
          size
  
          sizesrc
              Sets the source reference on Chart Studio Cloud
              for `size`.
  
  Returns
  -------
  plotly.graph_objs.sankey.link.hoverlabel.Font
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code: def font(self):
      """
      Sets the font used in hover labels.
  
      The 'font' property is an instance of Font
      that may be specified as:
        - An instance of :class:`plotly.graph_objs.sankey.link.hoverlabel.Font`
        - A dict of string/value properties that will be passed
          to the Font constructor
  
          Supported dict properties:
  
              color
  
              colorsrc
                  Sets the source reference on Chart Studio Cloud
                  for `color`.
              family
                  HTML font family - the typeface that will be
                  applied by the web browser. The web browser
                  will only be able to apply a font if it is
                  available on the system which it operates.
                  Provide multiple font families, separated by
                  commas, to indicate the preference in which to
                  apply fonts if they aren't available on the
                  system. The Chart Studio Cloud (at
                  https://chart-studio.plotly.com or on-premise)
                  generates images on a server, where only a
                  select number of fonts are installed and
                  supported. These include "Arial", "Balto",
                  "Courier New", "Droid Sans",, "Droid Serif",
                  "Droid Sans Mono", "Gravitas One", "Old
                  Standard TT", "Open Sans", "Overpass", "PT Sans
                  Narrow", "Raleway", "Times New Roman".
              familysrc
                  Sets the source reference on Chart Studio Cloud
                  for `family`.
              size
  
              sizesrc
                  Sets the source reference on Chart Studio Cloud
                  for `size`.
  
      Returns
      -------
      plotly.graph_objs.sankey.link.hoverlabel.Font
      """
      return self["font"]
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 13 for calling the Hoverlabel obj's underlying member method code with example usage: obj.font() and returns: self