code: def test_Union():
      from sympy.sets.sets import Interval
  
      assert list(
          unify(
              Interval(0, 1) + Interval(10, 11),
              Interval(0, 1) + Interval(12, 13),
              variables=(Interval(12, 13),),
          )
      )
  
imports: from sympy.core.add import Add
  from sympy.core.basic import Basic
  from sympy.core.containers import Tuple
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.logic.boolalg import And
  from sympy.core.symbol import Str
  from sympy.unify.core import Compound, Variable
  from sympy.unify.usympy import deconstruct, construct, unify, is_associative, is_commutative
  from sympy.abc import x, y, z, n
label_desc: Use image node_id 16 for calling a global function with example usage: test_Union() without return types