code: def get_atom_mass(atom: RDKitAtom) -> List[float]:
      """Get vector feature containing downscaled mass of the given atom.
  
      Parameters
      ---------
      atom: RDKitAtom
          RDKit atom object
  
      Returns
      -------
      List[float]
          A vector of downscaled mass of the given atom.
  
      """
      return [atom.GetMass() * 0.01]
  
imports: from rdkit import Chem
  import numpy
  import logging
  from typing import List, Tuple, Union, Dict, Set, Sequence, Optional
  from deepchem.utils.typing import RDKitAtom, RDKitMol, RDKitBond
  from deepchem.feat.base_classes import MolecularFeaturizer
  from deepchem.feat.graph_data import GraphData
  from deepchem.feat.molecule_featurizers.circular_fingerprint import CircularFingerprint
  from deepchem.feat.molecule_featurizers.rdkit_descriptors import RDKitDescriptors
  from deepchem.utils.molecule_feature_utils import one_hot_encode
  from deepchem.utils.molecule_feature_utils import get_atom_total_degree_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_formal_charge_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_total_num_Hs_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_hybridization_one_hot
  from deepchem.utils.molecule_feature_utils import get_atom_is_in_aromatic_one_hot
  from deepchem.feat.graph_features import bond_features
label_desc: Use image node_id 3 for calling a global function with example usage: get_atom_mass(atom) and returns: list