docstr: Represents the reflectance as a dependency of the viewing
  angle; e.g. paper is reflective when viewing it from the edge
  of the paper (almost 90 degrees), causing shine.
  
  The 'fresnel' property is a number and may be specified as:
    - An int or float in the interval [0, 5]
  
  Returns
  -------
  int|float
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code: def fresnel(self):
      """
      Represents the reflectance as a dependency of the viewing
      angle; e.g. paper is reflective when viewing it from the edge
      of the paper (almost 90 degrees), causing shine.
  
      The 'fresnel' property is a number and may be specified as:
        - An int or float in the interval [0, 5]
  
      Returns
      -------
      int|float
      """
      return self["fresnel"]
  
file_path: plotly.py/packages/python/plotly/plotly/graph_objs/mesh3d/_lighting.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 7 for calling the Lighting obj's underlying member method code with example usage: obj.fresnel() and returns: self