return null;
        }

        @Override
        public int waitFor() throws InterruptedException {
            return 0;
        }

        @Override
        public int exitValue() {
            return 0;
        }

        @Override
        public void destroy() {
        }
    }

                logger.warn("Interrupted to wait a process.", e);
            }
            try {
                process.destroyForcibly().waitFor(processDestroyTimeout, TimeUnit.SECONDS);
                return process.exitValue();
            } catch (final Exception e) {
                logger.error("Could not destroy a process correctly.", e);
            }
        }
        return -1;
    }

    /**