This enum contains the possible types for a flag metadata stored on a pdg.WorkItem attribute.
The attribute has no flags set.
The attribute has all flags set.
The attribute is marked as not being copied onto downstream work items.
The attribute value will be exported to the environment when the work item is executed out of process.
The attribute value can only be read, not modified.
The attribute is a built in created by PDG.
The attribute refers to an operator path.