src/vs/platform/terminal/common/capabilities/terminalCapabilityStore.ts/TerminalCapabilityStoreMultiplexer/_items
class TerminalCapabilityStoreMultiplexer:	private *_items(): IterableIterator<TerminalCapability> {
		for (const store of this._stores) {
			for (const c of store.items) {
				yield c;
			}
		}
	}