key property contains the file path. The given file will be copied to the
PDG working directory before the first work item from the node is scheduled to
This can be used to ensure that supporting files like digital assets and custom scripts are available for the work item job.
The specified paths can be absolute or relative to HOUDINI_PATH.
Methods from pdg.TypeInstance
Methods from pdg.Dependency
The name/key for the dependency, unique this is object
The list of nodes that depend on this external dependency object.