code: @BetaApi
    public final Operation deleteTargetInstance(String targetInstance) {
  
      DeleteTargetInstanceHttpRequest request =
          DeleteTargetInstanceHttpRequest.newBuilder().setTargetInstance(targetInstance).build();
      return deleteTargetInstance(request);
    }
docs: Deletes the specified TargetInstance resource.
  
  <p>Sample code:
  
  <pre><code>
  try (TargetInstanceClient targetInstanceClient = TargetInstanceClient.create()) {
  ProjectZoneTargetInstanceName targetInstance = ProjectZoneTargetInstanceName.of("[PROJECT]", "[ZONE]", "[TARGET_INSTANCE]");
  Operation response = targetInstanceClient.deleteTargetInstance(targetInstance.toString());
  }
  </code></pre>
  
  @param targetInstance Name of the TargetInstance resource to delete.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails