The implementation classes are contained in the corresponding implementation packages, such as com.ibm.rational.test.lt.models.behavior.lttest.impl, com.ibm.rational.test.lt.models.behavior.common.impl, com.ibm.rational.test.lt.models.behavior.data.impl and com.ibm.rational.test.lt.models.behavior.vps.impl.
Each of these packages also contains factory classes that enable you to create a model element from that package. For best results, use the factory classes to create model elements. For example, to create a loop, use this method:LTTestFactory.eINSTANCE.createCBLoop()
The LTBM provides common constructs that can be reused by protocol extensions. These constructs are included in various packages in the LTBM. The Javadoc information explains each available interface in more detail.