docs: public java.util.List<MaintenanceWindowExecutionTaskInvocationIdentity> getWindowExecutionTaskInvocationIdentities() {
          if (windowExecutionTaskInvocationIdentities == null) {
              windowExecutionTaskInvocationIdentities = new com.amazonaws.internal.SdkInternalList<MaintenanceWindowExecutionTaskInvocationIdentity>();
          }
          return windowExecutionTaskInvocationIdentities;
      }