# planning.WorkspacePlan.retains

**Workspace Manager concept example** A working example of the core library. It can change without notice.

- **Module:** planning
- **Package:** @libtmux/workspace
- **Language:** TypeScript
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-ts/blob/073b9d7dedad900bff6f5ec0ea47794e40225870/packages/workspace/src/planning.ts#L87
- **Page:** https://libtmux.org/en/ts/latest/workspace/reference/planning-workspaceplan-retains/

Surplus this apply will leave alone, and why.

Empty when nothing is surplus or the policy removes it. A non-empty list on
a session the workspace did not create is the case `prune: "owned"` exists
for: the file and the server disagree, and the file does not get to win by
default.