code: public final ListClustersResponse listClusters(String parent) {
  
      ListClustersRequest request = ListClustersRequest.newBuilder().setParent(parent).build();
      return listClusters(request);
    }
docs: Lists information about clusters in an instance.
  
  <p>Sample code:
  
  <pre><code>
  try (BaseBigtableInstanceAdminClient baseBigtableInstanceAdminClient = BaseBigtableInstanceAdminClient.create()) {
  InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
  ListClustersResponse response = baseBigtableInstanceAdminClient.listClusters(parent.toString());
  }
  </code></pre>
  
  @param parent The unique name of the instance for which a list of clusters is requested. Values
  are of the form `projects/&lt;project&gt;/instances/&lt;instance&gt;`. Use
  `&lt;instance&gt; = '-'` to list Clusters for all Instances in a project, e.g.,
  `projects/myproject/instances/-`.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails