docstr: Determines if the legend items symbols scale with their
  corresponding "trace" attributes or remain "constant"
  independent of the symbol size on the graph.
  
  The 'itemsizing' property is an enumeration that may be specified as:
    - One of the following enumeration values:
          ['trace', 'constant']
  
  Returns
  -------
  Any
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code: def itemsizing(self):
      """
      Determines if the legend items symbols scale with their
      corresponding "trace" attributes or remain "constant"
      independent of the symbol size on the graph.
  
      The 'itemsizing' property is an enumeration that may be specified as:
        - One of the following enumeration values:
              ['trace', 'constant']
  
      Returns
      -------
      Any
      """
      return self["itemsizing"]
  
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 21 for calling the Legend obj's underlying member method code with example usage: obj.itemsizing() and returns: self