HostServicePropertiesImpl.java 文件源码

public Duration getDurationProperty(String key, PeriodFormatter formatter,
        ContextProperties defaults) {
    Duration value = typedProperties.getDurationProperty(key, formatter);
    if (value != null) {
        return value;
    } else {
        return typedAllPropertiesFactory.create(defaults)
                .getDurationProperty(key, formatter);
    }
}