code: def _(x, y):
      return x + y
  
file_path: sympy/sympy/sets/handlers/add.py
imports: from sympy.core.numbers import oo, Infinity, NegativeInfinity
  from sympy.core.singleton import S
  from sympy.core import Basic, Expr
  from sympy.multipledispatch import Dispatcher
  from sympy.sets import Interval, FiniteSet
label_desc: Use image node_id 2 for calling a global function with example usage: _(x, y) and returns: unknown