src/vs/editor/common/config/editorOptions.ts/EditorGoToLocation/constructor
class EditorGoToLocation:	constructor() {
		const defaults: GoToLocationOptions = {
			multiple: 'peek',
			multipleDefinitions: 'peek',
			multipleTypeDefinitions: 'peek',
			multipleDeclarations: 'peek',
			multipleImplementations: 'peek',
			multipleReferences: 'peek',
			alternativeDefinitionCommand: 'editor.action.goToReferences',
			alternativeTypeDefinitionCommand: 'editor.action.goToReferences',
			alternativeDeclarationCommand: 'editor.action.goToReferences',
			alternativeImplementationCommand: '',
			alternativeReferenceCommand: '',
		};
		const jsonSubset: IJSONSchema = {
			type: 'string',
			enum: ['peek', 'gotoAndPeek', 'goto'],
			default: defaults.multiple,
			enumDescriptions: [
				nls.localize('editor.gotoLocation.multiple.peek', 'Show Peek view of the results (default)'),
				nls.localize('editor.gotoLocation.multiple.gotoAndPeek', 'Go to the primary result and show a Peek view'),
				nls.localize('editor.gotoLocation.multiple.goto', 'Go to the primary result and enable Peek-less navigation to others')
			]
		};
		const alternativeCommandOptions = ['', 'editor.action.referenceSearch.trigger', 'editor.action.goToReferences', 'editor.action.peekImplementation', 'editor.action.goToImplementation', 'editor.action.peekTypeDefinition', 'editor.action.goToTypeDefinition', 'editor.action.peekDeclaration', 'editor.action.revealDeclaration', 'editor.action.peekDefinition', 'editor.action.revealDefinitionAside', 'editor.action.revealDefinition'];
		super(
			EditorOption.gotoLocation, 'gotoLocation', defaults,
			{
				'editor.gotoLocation.multiple': {
					deprecationMessage: nls.localize('editor.gotoLocation.multiple.deprecated', "This setting is deprecated, please use separate settings like 'editor.editor.gotoLocation.multipleDefinitions' or 'editor.editor.gotoLocation.multipleImplementations' instead."),
				},
				'editor.gotoLocation.multipleDefinitions': {
					description: nls.localize('editor.editor.gotoLocation.multipleDefinitions', "Controls the behavior the 'Go to Definition'-command when multiple target locations exist."),
					...jsonSubset,
				},
				'editor.gotoLocation.multipleTypeDefinitions': {
					description: nls.localize('editor.editor.gotoLocation.multipleTypeDefinitions', "Controls the behavior the 'Go to Type Definition'-command when multiple target locations exist."),
					...jsonSubset,
				},
				'editor.gotoLocation.multipleDeclarations': {
					description: nls.localize('editor.editor.gotoLocation.multipleDeclarations', "Controls the behavior the 'Go to Declaration'-command when multiple target locations exist."),
					...jsonSubset,
				},
				'editor.gotoLocation.multipleImplementations': {
					description: nls.localize('editor.editor.gotoLocation.multipleImplemenattions', "Controls the behavior the 'Go to Implementations'-command when multiple target locations exist."),
					...jsonSubset,
				},
				'editor.gotoLocation.multipleReferences': {
					description: nls.localize('editor.editor.gotoLocation.multipleReferences', "Controls the behavior the 'Go to References'-command when multiple target locations exist."),
					...jsonSubset,
				},
				'editor.gotoLocation.alternativeDefinitionCommand': {
					type: 'string',
					default: defaults.alternativeDefinitionCommand,
					enum: alternativeCommandOptions,
					description: nls.localize('alternativeDefinitionCommand', "Alternative command id that is being executed when the result of 'Go to Definition' is the current location.")
				},
				'editor.gotoLocation.alternativeTypeDefinitionCommand': {
					type: 'string',
					default: defaults.alternativeTypeDefinitionCommand,
					enum: alternativeCommandOptions,
					description: nls.localize('alternativeTypeDefinitionCommand', "Alternative command id that is being executed when the result of 'Go to Type Definition' is the current location.")
				},
				'editor.gotoLocation.alternativeDeclarationCommand': {
					type: 'string',
					default: defaults.alternativeDeclarationCommand,
					enum: alternativeCommandOptions,
					description: nls.localize('alternativeDeclarationCommand', "Alternative command id that is being executed when the result of 'Go to Declaration' is the current location.")
				},
				'editor.gotoLocation.alternativeImplementationCommand': {
					type: 'string',
					default: defaults.alternativeImplementationCommand,
					enum: alternativeCommandOptions,
					description: nls.localize('alternativeImplementationCommand', "Alternative command id that is being executed when the result of 'Go to Implementation' is the current location.")
				},
				'editor.gotoLocation.alternativeReferenceCommand': {
					type: 'string',
					default: defaults.alternativeReferenceCommand,
					enum: alternativeCommandOptions,
					description: nls.localize('alternativeReferenceCommand', "Alternative command id that is being executed when the result of 'Go to Reference' is the current location.")
				},
			}
		);
	}