code: def _prop_descriptions(self):
      return """\
          color
              Sets the base color of unselected lines. in connection
              with `unselected.line.opacity`.
          opacity
              Sets the opacity of unselected lines. The default
              "auto" decreases the opacity smoothly as the number of
              lines increases. Use 1 to achieve exact
              `unselected.line.color`.
          """
  
file_path: catboost/contrib/python/plotly/py3/plotly/graph_objs/parcoords/unselected/_line.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 5 for calling the Line obj's underlying member method code with example usage: obj._prop_descriptions() and returns: str