License Generator
The license generator service includes support for validating a product, validating a license model, generating a license, consolidating fulfillments, generating license file names, generating consolidated license file names, and generating custom host IDs.
Sample implementations are in LicenseGeneratorServiceImpl.java in extgenservice.zip in
extgenservice\src\com\flexnet\external\webservice\keygenerator
See Using External Services with License Technologies in the section Administrator Reference in the