(Quick Reference)
                create-mock
Purpose
The 
create-mock generates a mock for a domain class
Examples
grails create-mock Person
grails create-mock "*"
Description
Given at least one domain class, this command creates a mock for it. The file will be placed in the 
src/groovy{classPackage}/{domainClass}.groovy file.
Usage:
grails create-mock [domainClass]
Arguments:
domainClass - Either a domain class name (case-sensitive) without its package or a wildcard (*). If you specify the wildcard the artifacts will be generated for all domain classes.