class_docstr: Add wireframe to a mesh.
  
  The wireframe filter should be attached before the shading filter for the
  wireframe to be shaded.
  
  Parameters
  ----------
  color : str or tuple or Color
      Line color of the wireframe
  width : float
      Line width of the wireframe
  enabled : bool
      Whether the wireframe is drawn or not
  
  Examples
  --------
  See
  `examples/basics/scene/mesh_shading.py
  <https://github.com/vispy/vispy/blob/main/examples/basics/scene/mesh_shading.py>`_
  example script.
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docstr: Draw only the wireframe and discard the interior of the faces.
docstr_tok: ["Draw","only","the","wireframe","and","discard","the","interior","of","the","faces","."]
code: def wireframe_only(self):
      """Draw only the wireframe and discard the interior of the faces."""
      return self._wireframe_only
  
imports: import numbers
  import numpy
  from vispy.gloo import Texture2D, VertexBuffer
  from vispy.visuals.shaders import Function, Varying
  from vispy.visuals.filters import Filter, PrimitivePickingFilter
  from ...color import Color
label_desc: Use image node_id 8 for calling the WireframeFilter obj's underlying member method code with example usage: obj.wireframe_only() and returns: self