# LibTmux.Workspace.WorkspaceExistingSession.Append

- **Module:** LibTmux.Workspace
- **Package:** LibTmux.Workspace
- **Language:** C#
- **Kind:** constant
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux.Workspace/WorkspacePlan.cs#L20
- **Page:** https://libtmux.org/en/csharp/latest/workspace/reference/libtmux-workspace-workspaceexistingsession-append/

Adds the declared windows without changing existing children or local session options.