src/vs/workbench/contrib/terminal/browser/xterm/decorationAddon.ts/DecorationAddon/_removeCapabilityDisposables
class DecorationAddon:	private _removeCapabilityDisposables(c: TerminalCapability): void {
		const disposables = this._capabilityDisposables.get(c);
		if (disposables) {
			dispose(disposables);
		}
		this._capabilityDisposables.delete(c);
	}