Products Ads DoubleClick Ad Exchange APIs DoubleClick Ad Exchange Seller API Reference Adunits.customchannels For a list of methods for this resource, see the end of this page. Resource representations Methods list List all custom channels which the specified ad unit belongs to. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated September 24, 2013.