src/vs/editor/contrib/gotoSymbol/link/goToDefinitionAtPosition.ts/GotoDefinitionAtPositionEditorContribution/addDecoration
class GotoDefinitionAtPositionEditorContribution:	private addDecoration(range: Range, hoverMessage: MarkdownString): void {

		const newDecorations: IModelDeltaDecoration = {
			range: range,
			options: {
				description: 'goto-definition-link',
				inlineClassName: 'goto-definition-link',
				hoverMessage
			}
		};

		this.linkDecorations = this.editor.deltaDecorations(this.linkDecorations, [newDecorations]);
	}