code: def _prop_descriptions(self):
      return """\
          line
              :class:`plotly.graph_objects.choropleth.marker.Line`
              instance or dict with compatible properties
          opacity
              Sets the opacity of the locations.
          opacitysrc
              Sets the source reference on Chart Studio Cloud for
              `opacity`.
          """
  
file_path: catboost/contrib/python/plotly/py3/plotly/graph_objs/choropleth/_marker.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 7 for calling the Marker obj's underlying member method code with example usage: obj._prop_descriptions() and returns: str