src/vs/workbench/contrib/terminal/browser/terminalEditorInput.ts/TerminalEditorInput/copy
class TerminalEditorInput:	override copy(): IEditorInput {
		const instance = this._copyInstance || this._terminalInstanceService.createInstance({}, TerminalLocation.Editor);
		this._copyInstance = undefined;
		return this._instantiationService.createInstance(TerminalEditorInput, instance);
	}