How to write a reusable script Library

Hi

What if I have two or more classes under "module-name", how can I instantiate all the classes on my groovy script

ex.
Lib
--module-name
--example
--other_class
--other_class2
--other_class3
--....


Other_Test_Suite
--TestCase
--groovy_script

Do I have to do the following?:

library = testRunner.testCase.testSuite.project.testSuites["Library"]
module = library.testCases["module-name"].testSteps["Example"]
module2 = library.testCases["module-name"].testSteps["other_class"]
module3 = library.testCases["module-name"].testSteps["other_class2"]
....
module.run(testRunner, context)
module2.run(testRunner, context)
module3.run(testRunner, context)

Or there are other ways like:

library = testRunner.testCase.testSuite.project.testSuites["Library"]
for(int i = 0; i <= [i]number_of_classes[/i]; i++){
    library.testCases["module-name"].testSteps[i].run(testRunner, context)
}

// [i]i[/i] is the order of class under module_name 

Thanks in advance,
Jack