apollo-common/src/main/java/com/ctrip/framework/apollo/common/entity/App.java/App/toString
class App:  public String toString() {
    return toStringHelper().add("name", name).add("appId", appId)
        .add("orgId", orgId)
        .add("orgName", orgName)
        .add("ownerName", ownerName)
        .add("ownerEmail", ownerEmail).toString();
  }