code: @BetaApi
    public final Operation insertInterconnectAttachment(
        ProjectRegionName region, InterconnectAttachment interconnectAttachmentResource) {
  
      InsertInterconnectAttachmentHttpRequest request =
          InsertInterconnectAttachmentHttpRequest.newBuilder()
              .setRegion(region == null ? null : region.toString())
              .setInterconnectAttachmentResource(interconnectAttachmentResource)
              .build();
      return insertInterconnectAttachment(request);
    }
docs: Creates an InterconnectAttachment in the specified project using the data included in the
  request.
  
  <p>Sample code:
  
  <pre><code>
  try (InterconnectAttachmentClient interconnectAttachmentClient = InterconnectAttachmentClient.create()) {
  ProjectRegionName region = ProjectRegionName.of("[PROJECT]", "[REGION]");
  InterconnectAttachment interconnectAttachmentResource = InterconnectAttachment.newBuilder().build();
  Operation response = interconnectAttachmentClient.insertInterconnectAttachment(region, interconnectAttachmentResource);
  }
  </code></pre>
  
  @param region Name of the region for this request.
  @param interconnectAttachmentResource Represents an InterconnectAttachment (VLAN attachment)
  resource. For more information, see Creating VLAN Attachments. (== resource_for
  beta.interconnectAttachments ==) (== resource_for v1.interconnectAttachments ==)
  @throws com.google.api.gax.rpc.ApiException if the remote call fails