The "New LLRP Message" wizard is a standard JFace wizard. It consists of two classes, org.fosstrak.llrp.commander.wizards.NewLLRPMessageWizard and org.fosstrak.llrp.commander.wizards.NewLLRPMessageWizardPage, that extend the corresponding eclipse classes. NewLLRPMessageWizard is the main class and specifies what happens when a user presses the "Finish" button. It has a NewLLRPMessageWizardPage that defines the input fields and handles user input.
To generate a new LLRP message the wizard uses the LLRPFactory.