How do you specify a transition in the kotlinx.html DSL?

I posted this on slashdot, but maybe I’ll get an answer here :wink:

I’m building a web toy using the kotlinx DSL, and trying to do the equivalent of adding transition: color 1s. I expect that within a css {} block, I should either be setting transition or be setting transitionProperty + transitionDuration.

Is this right? If so, how? The Transition(), TransitionProperty() and TransitionDuration() constructors don’t seem to take any arguments, and there don’t seem to be any class properties to refer to. I wonder if maybe my IntelliJ is somehow misconfigured, because the source on github does have constructors with parameters.