- **Assertion-based validation** - All methods validate inputs using `AssertionUtil.assertArgumentNotNull()` and `AssertionUtil.assertArgumentNotEmpty()`
- **Exception wrapping** - Checked exceptions are consistently wrapped in runtime exceptions (e.g., `ClassNotFoundException` → `ClassNotFoundRuntimeException`)

        return new File(LaServletContextUtil.getServletContext().getRealPath(path));
    }

    /**
     * Checks if the system is in a force-stop state.
     *
     * @return true if the system is force-stopping, false otherwise.
     */
    public boolean isForceStop() {
        return forceStop.get();
    }

    /**
     * Sets the force-stop state of the system.
     *

                    context.addQuery(boolQuery -> boolQuery.filter(geoInfo.toQueryBuilder()));
                }
            });
        }

        /**
         * Gets the collapse builder for result grouping.
         *
         * @param fessConfig the Fess configuration
         * @return the collapse builder
         */
        protected CollapseBuilder getCollapseBuilder(final FessConfig fessConfig) {