@Override
    public boolean match(final String rule) {
        return rule.matches("^double\\|\\d+(?:\\.\\d+)?-\\d+(?:\\.\\d+)?.*");
    }
Random double value generator in the specified range.
shenyu-plugin/shenyu-plugin-mock/src/main/java/org/apache/shenyu/plugin/mock/generator/RandomDoubleGenerator.java