code: def _prop_descriptions(self):
      return """\
          line
              :class:`plotly.graph_objects.indicator.gauge.threshold.
              Line` instance or dict with compatible properties
          thickness
              Sets the thickness of the threshold line as a fraction
              of the thickness of the gauge.
          value
              Sets a treshold value drawn as a line.
          """
  
file_path: plotly.py/packages/python/plotly/plotly/graph_objs/indicator/gauge/_threshold.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 7 for calling the Threshold obj's underlying member method code with example usage: obj._prop_descriptions() and returns: str