code: public ListenableFuture<Collection<KeyValue>> getAll() {
          checkThatDistributedStoreIsActive();
          KayVeeCommand.ALLCommand allCommand = new KayVeeCommand.ALLCommand(getCommandId());
          return issueCommandToCluster(allCommand);
      }
docs: Issue a {@link KayVeeCommand.ALLCommand}.
  Returns all the replicated {@code key=>value} pairs in the system.
  
  @return future that will be triggered when the command is successfully
  <strong>committed</strong> to replicated storage or is <strong>known</strong>
  to have failed. This future <strong>may not</strong> be triggered. Callers
  are advised <strong>not</strong> to wait indefinitely, and instead, use
  timed waits.