I was confused when looking at the gradle source code. The destinationDirectory property in the AbstractArchiveTask is not declared AbstractArchiveTask, but why can it be called directly?

*archiveTask.destinationDirectory.set(new File(temporaryFolder.testDirectory, 'destinationDir'))* H

ow is this done？

The AbstractArchiveTask source code contains only methods and archiveDestinationDirectory attributes, but no destinationDirectory attributes.

    public DirectoryProperty getDestinationDirectory() {
        return archiveDestinationDirectory;
    }