+ /**
+ * Invoke a GET request for the a tenant.
+ *
+ * @param cloudOwner the cloud owner
+ * @param cloudRegion the cloud region
+ * @param tenantId the ID of the tenant
+ * @return the tenant
+ */
+ Tenant invokeGetTenant(final String cloudOwner, final String cloudRegion, final String tenantId);
+
+ /**
+ * Invoke a GET request for the esr system info list for a cloud region.
+ *
+ * @param cloudOwner the cloud owner
+ * @param cloudRegion the cloud region
+ * @return the esr system info list for the VNFM
+ */
+ EsrSystemInfoList invokeGetCloudRegionEsrSystemInfoList(final String cloudOwner, final String cloudRegion);
+