I am following a tutorial about Unity and I see that the instructor has intellisense when writes the method's name.

However I have only intellisense with classes and variables, I mean Unity classe...
https://stackoverflow.com/questions/52189426/how-to-get-intellisense-in-visual-studio-code-for-unity-functions-names
* Autocompletion not working in Visual studio * How to enable intellisense in Visual Studio 2017 for Unity