apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/util/RoleUtils.java/RoleUtils/buildReleaseNamespaceRoleName
class RoleUtils:  public static String buildReleaseNamespaceRoleName(String appId, String namespaceName, String env) {
    return STRING_JOINER.join(RoleType.RELEASE_NAMESPACE, appId, namespaceName, env);
  }