Will there be a fifth installment in the “John Wick” franchise? It’s a bit murky. While there once had been talk of shooting a fourth and fifth “Wick” back to back, that didn’t happen. Plus, series director Chad Stahelski recently said he and star Keanu Reeves are “done for the moment” and that they’re going to give the character “a rest.” Well, Stahelski directs and Reeves performs in “John Wick: Chapter 4” — in theaters this week — as if this is indeed their going-away party. With a runtime that, if you include the closing credits, sniff three hours, “Chapter 4” is an action romp that’s over-the-top even by “Wick”-ian standards. The fighting. There’s so much fighting. Even if you appreciate the elaborate and undeniably impressive choreography of the fight scenes that are the calling card of these movies, you may feel a bit pummeled by “Chapter 4.” Not as beaten as Reeve’s titular assassin-turned-angel of revenge — John is punched, kicked, stabbed, shot and, repeatedly, hit by cars — but at least a bit worn out. Among the enemies John Wick (Keanu Reeves) battles in “John Wick: Chapter 4” is a horde of armored tough guys.