code: public java.util.List<ContainerInstance> getContainerInstances() {
          if (containerInstances == null) {
              containerInstances = new com.amazonaws.internal.SdkInternalList<ContainerInstance>();
          }
          return containerInstances;
      }
docs: <p>
  The list of container instances.
  </p>
  
  @return The list of container instances.