code: public final void deleteGroup(GroupName name) {
  
      DeleteGroupRequest request =
          DeleteGroupRequest.newBuilder().setName(name == null ? null : name.toString()).build();
      deleteGroup(request);
    }
docs: Deletes an existing group.
  
  <p>Sample code:
  
  <pre><code>
  try (GroupServiceClient groupServiceClient = GroupServiceClient.create()) {
  GroupName name = GroupName.of("[PROJECT]", "[GROUP]");
  groupServiceClient.deleteGroup(name);
  }
  </code></pre>
  
  @param name The group to delete. The format is
  `"projects/{project_id_or_number}/groups/{group_id}"`.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails