docstr: Sets the update menu's vertical position anchor This anchor
  binds the `y` position to the "top", "middle" or "bottom" of
  the range selector.
  
  The 'yanchor' property is an enumeration that may be specified as:
    - One of the following enumeration values:
          ['auto', 'top', 'middle', 'bottom']
  
  Returns
  -------
  Any
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code: def yanchor(self):
      """
      Sets the update menu's vertical position anchor This anchor
      binds the `y` position to the "top", "middle" or "bottom" of
      the range selector.
  
      The 'yanchor' property is an enumeration that may be specified as:
        - One of the following enumeration values:
              ['auto', 'top', 'middle', 'bottom']
  
      Returns
      -------
      Any
      """
      return self["yanchor"]
  
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 35 for calling the Updatemenu obj's underlying member method code with example usage: obj.yanchor() and returns: self