src/vs/editor/common/config/editorOptions.ts/EditorParameterHints/constructor
class EditorParameterHints:	constructor() {
		const defaults: InternalParameterHintOptions = {
			enabled: true,
			cycle: false
		};
		super(
			EditorOption.parameterHints, 'parameterHints', defaults,
			{
				'editor.parameterHints.enabled': {
					type: 'boolean',
					default: defaults.enabled,
					description: nls.localize('parameterHints.enabled', "Enables a pop-up that shows parameter documentation and type information as you type.")
				},
				'editor.parameterHints.cycle': {
					type: 'boolean',
					default: defaults.cycle,
					description: nls.localize('parameterHints.cycle', "Controls whether the parameter hints menu cycles or closes when reaching the end of the list.")
				},
			}
		);
	}