code: def test_merge_existing_all():
      test_merge_existing(["dir1-link"], ["dir2-link"])
      test_merge_existing(["dir2-link"], ["dir1-link"])
      test_merge_existing(["dir1-link"], ["dir1-link", "dir2-link"])
      test_merge_existing(["dir2-link"], ["dir1-link", "dir2-link"])
  
file_path: turicreate/src/external/boost/boost_1_68_0/tools/build/test/link.py
imports: import BoostBuild
label_desc: Use image node_id 5 for calling a global function with example usage: test_merge_existing_all() without return types