You have a number of options to add a new generator to the list of proposed project generators.
Modify the behavior of an existing generator. For example, extend the IlrPOJOGenerator or IlrWebServiceGenerator classes to change the file prefix name, the package prefix name, and the header file.
Create a new generator by extending the IlrVelocityGenerator class.
Create a new generator by extending the IlrFileGenerator class.