Resolves checkstyle errors for execute-around extension-objects (#1071)

* Reduces checkstyle errors in execute-around

* Reduces checkstyle errors in extension-objects

extension-objects/src/main/java/concreteextensions/Soldier.java

@@ -29,7 +29,7 @@ import org.slf4j.LoggerFactory;
 import units.SoldierUnit;
 
 /**
- * Class defining Soldier
+ * Class defining Soldier.
  */
 public class Soldier implements SoldierExtension {
   private static final Logger LOGGER = LoggerFactory.getLogger(Soldier.class);