code: def roughness(self, val):
      self["roughness"] = val
  
file_path: catboost/contrib/python/plotly/py3/plotly/graph_objs/volume/_lighting.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 10 for calling the Lighting obj's underlying member method code with example usage: obj.roughness(val) without return types