code: def filter_trfs_subclass(trfs, superclass):
      return filter(lambda t: issubclass(t, superclass), trfs)
  
imports: import solt.transforms
  import solt.core
  import numpy
  import pytest
  import sys, inspect
  import torch
  from .fixtures import *
label_desc: Use image node_id 4 for calling a global function with example usage: filter_trfs_subclass(trfs, superclass) and returns: filter