code: def test_move_only_holder():
      from pybind11_tests.smart_ptr import TypeWithMoveOnlyHolder
  
      a = TypeWithMoveOnlyHolder.make()
      stats = ConstructorStats.get(TypeWithMoveOnlyHolder)
      assert stats.alive() == 1
      del a
      assert stats.alive() == 0
  
imports: import pytest
  from pybind11_tests import ConstructorStats
label_desc: Use image node_id 6 for calling a global function with example usage: test_move_only_holder() without return types