code: def __call__(self, *args):
      ret = super().__call__(*args)
      return (
          NotImplemented
          if ret is NotImplemented
          else TaggedValue(ret, self.unit)
      )
  
imports: import math
  from packaging.version import parse
  import numpy
  import matplotlib.ticker
  import matplotlib.units
label_desc: Use image node_id 2 for calling the ConvertReturnProxy obj's underlying member method code with example usage: obj.__call__() and returns: unknown