code: def _add_blank_line(s):
      if s.endswith("\n"):
          return s + "\n"
      else:
          return s + "\n\n"
  
imports: import funcsigs
  import numpy
  import tensorflow.compat.v2
  from trax.tf_numpy.numpy_impl import arrays
  from trax.tf_numpy.numpy_impl import dtypes
label_desc: Use image node_id 10 for calling a global function with example usage: _add_blank_line(s) and returns: unknown, unknown