Provide an API to show hover-like tooltip

Please provide an API to trigger a hover-like tooltip. Use case: In my language extension, I want to let users know the type of the expression by pressing a combination of keys. This is similar to what hover does but: - It is triggered by pressing a shortcut - When the same shortcut is pressed again I want to widen the scope of the expression and show the type of a "bigger" expression, etc. Being able to show custom tooltips is also useful in different scenarios for providing extra information about the code. - VSCode Version: 1.14.2 - OS Version: MacOS