# tmuxp.workspace.builder.WorkspaceBuilderProtocol.__init__

- **Module:** tmuxp.workspace.builder.WorkspaceBuilderProtocol
- **Package:** tmuxp
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/tmuxp/blob/153acdf6ff1268b14d3d03ed488f545a7123c8f1/src/tmuxp/workspace/builder/protocol.py#L80
- **Page:** https://libtmux.org/en/py/latest/workspace/reference/tmuxp-workspace-builder-workspacebuilderprotocol-__init__/

```
tmuxp.workspace.builder.WorkspaceBuilderProtocol.__init__(self, session_config: dict[str, t.Any], server: Server, plugins: list[t.Any] | None = None, on_progress: t.Callable[[str], None] | None = None, on_before_script: t.Callable[[], None] | None = None, on_script_output: t.Callable[[str], None] | None = None, on_build_event: t.Callable[[dict[str, t.Any]], None] | None = None) -> None
```

Construct a builder from an expanded workspace and a tmux server.