// ===================================================================================
    //                                                                            Variable
    //

    /** Array of search request parameter rewriters for modifying search parameters. */
    protected SearchRequestParamsRewriter[] searchRequestParamsRewriters = {};

            }
        }
        return systemCpuPercent;
    }

    /**
     * Gets a map of filtered environment variables.
     *
     * @param keyPattern The pattern to filter environment variable keys.
     * @return A map of filtered environment variables.
     */
    public Map<String, String> getFilteredEnvMap(final String keyPattern) {
        final Pattern pattern = Pattern.compile(keyPattern);