code: def inc(x):
      if isinstance(x, Integer):
          yield x + 1
  
file_path: sympy/sympy/strategies/branch/tests/test_traverse.py
imports: from sympy.core.basic import Basic
  from sympy.core.numbers import Integer
  from sympy.core.singleton import S
  from sympy.strategies.branch.traverse import top_down, sall
  from sympy.strategies.branch.core import do_one, identity
label_desc: Use image node_id 1 for calling a global function with example usage: inc(x) without return types