code: def bla(self, a, b, c):
      return a, b, c
  
imports: from __future__ import division, print_function
  import re
  import pytest
  from sacred.config.signature import Signature
  from sacred.utils import MissingConfigError
label_desc: Use image node_id 1 for calling the SomeClass obj's underlying member method code with example usage: obj.bla(a, b, c) and returns: a,  b,  c