Adds a task definition to the current project, such that this new task can be used in the current project. Two attributes are needed, the name that identifies this task uniquely, and the full name of the class (including the packages) that implements this task.
You can also define a group of tasks at once using the file or resource attributes. These attributes point to files in the format of Java property files. Each line defines a single task in the format:
taskname=fully.qualified.java.classnameTaskdef should be used to add your own tasks to the system. See also "Writing your own task".