I'm curious about the method:getSubProperties

Environment

• Dubbo version: 2.7.5-SNAPSHOT
• Operating System version: win10
• Java version: 1.8.0_111

Steps to reproduce this issue

1. 为什么解析@EnableDubboConfigBinding的每一行配置都要从springEnv引用到 new AbstractEnvironment() 见org/apache/dubbo/config/spring/util/PropertySourcesUtils.java:52 如下： public static Map<String, Object> getSubProperties(Iterable<PropertySource<?>> propertySources, String prefix) {

    // Non-Extension AbstractEnvironment
    AbstractEnvironment environment = new AbstractEnvironment() {
    };
   
    MutablePropertySources mutablePropertySources = environment.getPropertySources();
   
    for (PropertySource<?> source : propertySources) {
        mutablePropertySources.addLast(source);
    }