In his new play, The Comeuppance, Branden Jacobs-Jenkins checks in with his generation of Americans nearing 40. The five principals in this world premiere are gathering for their 20th high school reunion, and Jacobs-Jenkins, 38, draws his structure from notable plays that involve excessive drinking after sundown: Long Day’s Journey into Night, Who’s Afraid of Virginia Woolf? and The Boys in the Band. In addition, those who have read Booth Tarkington’s The Magnificent Ambersons may recall that comeuppance figures heavily in that novel. There’s also a smidgen of The Big Chill and a larger scoop of John O’Hara’s Appointment in Samarra.