How does the author use foreshadowing in The Garden Party?

Jose's song foreshadows the news of the young man's death.

"This Life is Wee-ary, A Tear - a Sigh. A Love that Chan-ges, This Life is Wee-ary, A Tear - a Sigh. A Love that Chan-ges, And then ... Good-bye!"

But at the word "Good-bye," and although the piano sounded more desperate than ever, her face broke into a brilliant, dreadfully unsympathetic smile.