docstr: Sets the images's x coordinate axis. If set to a x axis id
  (e.g. "x" or "x2"), the `x` position refers to a x coordinate.
  If set to "paper", the `x` position refers to the distance from
  the left of the plotting area in normalized coordinates where 0
  (1) corresponds to the left (right). If set to a x axis ID
  followed by "domain" (separated by a space), the position
  behaves like for "paper", but refers to the distance in
  fractions of the domain length from the left of the domain of
  that axis: e.g., *x2 domain* refers to the domain of the second
  x  axis and a x position of 0.5 refers to the point between the
  left and the right of the domain of the second x axis.
  
  The 'xref' property is an enumeration that may be specified as:
    - One of the following enumeration values:
          ['paper']
    - A string that matches one of the following regular expressions:
          ['^x([2-9]|[1-9][0-9]+)?( domain)?$']
  
  Returns
  -------
  Any
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code: def xref(self):
      """
      Sets the images's x coordinate axis. If set to a x axis id
      (e.g. "x" or "x2"), the `x` position refers to a x coordinate.
      If set to "paper", the `x` position refers to the distance from
      the left of the plotting area in normalized coordinates where 0
      (1) corresponds to the left (right). If set to a x axis ID
      followed by "domain" (separated by a space), the position
      behaves like for "paper", but refers to the distance in
      fractions of the domain length from the left of the domain of
      that axis: e.g., *x2 domain* refers to the domain of the second
      x  axis and a x position of 0.5 refers to the point between the
      left and the right of the domain of the second x axis.
  
      The 'xref' property is an enumeration that may be specified as:
        - One of the following enumeration values:
              ['paper']
        - A string that matches one of the following regular expressions:
              ['^x([2-9]|[1-9][0-9]+)?( domain)?$']
  
      Returns
      -------
      Any
      """
      return self["xref"]
  
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 23 for calling the Image obj's underlying member method code with example usage: obj.xref() and returns: self