package commands;

public class WallCommand {

    public boolean isApplicable(CommandParameter commandParameter) {
        return true;
    }

}

@@ -40,16 +40,77 @@
 mand %7B%0A%0A
+    private static final String WALL_IDENTIFIER = %22 wall %22;%0A%0A
     publ
@@ -189,12 +189,52 @@
 urn 
-true
+commandParameter.startsWith(WALL_IDENTIFIER)
 ;%0A  

implemented isApplicable