code: def __call__(self, data):
      # Save a copy
      data["label_rgb"] = data["label"]
      data["label"] = F.rgb2id(data["label"])
      return data
  
imports: from collections import Counter
  import numpy
  import paddleseg
  import paddlepanseg.transforms.functional
  from paddlepanseg.cvlibs import manager
  from paddlepanseg.cvlibs.info_dicts import InfoDict
  from paddlepanseg.utils import encode_pan_id
  from .test_transforms import trim_for_test
label_desc: Use image node_id 1 for calling the ConvertRGBToID obj's underlying member method code with example usage: obj.__call__(data) and returns: data