src/vs/editor/browser/controller/textAreaInput.ts/ClipboardEventUtils/setTextData
class ClipboardEventUtils:	public static setTextData(clipboardData: DataTransfer, text: string, html: string | null | undefined, metadata: ClipboardStoredMetadata): void {
		clipboardData.setData(Mimes.text, text);
		if (typeof html === 'string') {
			clipboardData.setData('text/html', html);
		}
		clipboardData.setData('vscode-editor-data', JSON.stringify(metadata));
	}