input: Write a function that converts the given Java code snippet to Python 3. The function should take no arguments and should return the equivalent Python function as a string.
  
  def port_java_to_python():
      return "def foo(a, b):\n    return a + b"
  
  assert port_java_to_python()=="def foo(a, b):\n    return a + b"
output: def port_java_to_python():
      return "def foo(a, b):\n    return a + b"