docstr: Sets the image container size horizontally. The image will be
  sized based on the `position` value. When `xref` is set to
  `paper`, units are sized relative to the plot width. When
  `xref` ends with ` domain`, units are sized relative to the
  axis width.
  
  The 'sizex' property is a number and may be specified as:
    - An int or float
  
  Returns
  -------
  int|float
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code: def sizex(self):
      """
      Sets the image container size horizontally. The image will be
      sized based on the `position` value. When `xref` is set to
      `paper`, units are sized relative to the plot width. When
      `xref` ends with ` domain`, units are sized relative to the
      axis width.
  
      The 'sizex' property is a number and may be specified as:
        - An int or float
  
      Returns
      -------
      int|float
      """
      return self["sizex"]
  
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 7 for calling the Image obj's underlying member method code with example usage: obj.sizex() and returns: self