src/vs/workbench/api/browser/mainThreadNotebookKernels.ts/MainThreadNotebookKernels/dispose
class MainThreadNotebookKernels:	dispose(): void {
		this._disposables.dispose();
		for (const [, registration] of this._kernels.values()) {
			registration.dispose();
		}
		for (const [, registration] of this._kernelDetectionTasks.values()) {
			registration.dispose();
		}
		this._editors.dispose();
	}