apollo-core/src/main/java/com/ctrip/framework/foundation/Foundation.java/Foundation/getProperty
class Foundation:  public static String getProperty(String name, String defaultValue) {
    try {
      return getManager().getProperty(name, defaultValue);
    } catch (Throwable ex) {
      logger.error("getProperty for {} failed.", name, ex);
      return defaultValue;
    }
  }