output: #fixed code
                                  public void reputation(final String uid, final int rep)
          throws IOException {
          this.checkExisting(uid);
          try (final Item item = this.item()) {
              new Xocument(item.path()).modify(
                  new Directives().xpath(
                      String.format(
                          "/people/person[@id='%s']",
                          uid
                      )
                  ).addIf("reputation").set(rep)
              );
          }
      }
input: #vulnerable code 
                                  public void reputation(final String uid, final int rep)
          throws IOException {
          if (!this.exists(uid)) {
              throw new IllegalArgumentException(
                  new Par("Person @%s doesn't exist").say(uid)
              );
          }
          try (final Item item = this.item()) {
              new Xocument(item.path()).modify(
                  new Directives().xpath(
                      String.format(
                          "/people/person[@id='%s']",
                          uid
                      )
                  ).addIf("reputation").set(rep)
              );
          }
      } 
                              #location 5 
                              #vulnerability type RESOURCE_LEAK