code: def _prop_descriptions(self):
      return """\
          decreasing
              :class:`plotly.graph_objects.indicator.delta.Decreasing
              ` instance or dict with compatible properties
          font
              Set the font used to display the delta
          increasing
              :class:`plotly.graph_objects.indicator.delta.Increasing
              ` instance or dict with compatible properties
          position
              Sets the position of delta with respect to the number.
          prefix
              Sets a prefix appearing before the delta.
          reference
              Sets the reference value to compute the delta. By
              default, it is set to the current value.
          relative
              Show relative change
          suffix
              Sets a suffix appearing next to the delta.
          valueformat
              Sets the value formatting rule using d3 formatting
              mini-languages which are very similar to those in
              Python. For numbers, see:
              https://github.com/d3/d3-format/tree/v1.4.5#d3-format.
          """
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 19 for calling the Delta obj's underlying member method code with example usage: obj._prop_descriptions() and returns: str