code: def find_type_conversion(source_type, target_type):
      
      if type(source_type) == type(target_type):
          return 'identity'
      elif type(target_type) == FloatTensorType:
          return 'imageToFloatTensor'
      else:
          raise ValueError('Unsupported type conversion from %s to %s' % (
                           source_type, target_type))
docs: Find the operator name for converting source_type into target_type