This is my second extension ported from Brackets-UI5 into VS Code. It allows to search & display UI5 objects in the side bar. By design all information is displayed there, so not everything is exposed directly (but for example you can hover on a method parameter to see its type). You can also click on the name to open the original documentation in your default browser.
Filtering is possible, for example displaying only methods or properties, or only members with a given string:
Please check the extension page for more information:
PS. You may also check my second extension for OData mock files generation: https://marketplace.visualstudio.com/items?itemName=jacek-wozniczak.vscode-ui5-odata-mock-generator