public static BasicAuthAuthenticationStrategy newInstance(final String handleType) {
        String type = handleType;
        if (StringUtils.isBlank(type)) {
            type = "default";
        }
        return ExtensionLoader.getExtensionLoader(BasicAuthAuthenticationStrategy.class).getJoin(type);
    }
new instance basicAuthAuthenticationStrategy.

@param handleType handleType
@return basicAuthAuthenticationStrategy
shenyu-plugin/shenyu-plugin-security/shenyu-plugin-basic-auth/src/main/java/org/apache/shenyu/plugin/basic/auth/strategy/BasicAuthAuthenticationStrategyFactory.java