apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/entity/bo/ConfigBO.java/ConfigBO/toString
class ConfigBO:  @Override
  public String toString() {
    return "ConfigBO{" +
        "env=" + env +
        ", ownerName='" + ownerName + '\'' +
        ", appId='" + appId + '\'' +
        ", clusterName='" + clusterName + '\'' +
        ", namespace='" + namespace + '\'' +
        ", isPublic='" + isPublic + '\'' +
        ", configFileContent='" + configFileContent + '\'' +
        ", format=" + format +
        '}';
  }