src/vs/editor/common/config/editorOptions.ts/EditorDropIntoEditor/constructor
class EditorDropIntoEditor:	constructor() {
		const defaults: EditorDropIntoEditorOptions = { enabled: true };
		super(
			EditorOption.dropIntoEditor, 'dropIntoEditor', defaults,
			{
				'editor.dropIntoEditor.enabled': {
					type: 'boolean',
					default: defaults.enabled,
					markdownDescription: nls.localize('dropIntoEditor.enabled', "Controls whether you can drag and drop a file into a text editor by holding down `shift` (instead of opening the file in an editor)."),
				},
			}
		);
	}