There is not directly an equivalent, as that would allow you to send any ANT message, possibly impacting other channels.
Firstly, if you are communicating with an ANT+ device, you want the ANT+ API (the ANT API does not let you use the ANT+ network).
For the ANT API, the "Creating ANT Android Apps" document in the SDK is a good starting point. It explains how you get an AntChannel object to interact with, which provides methods for each of the supported ANT messages.