Dynamicall register toolwindow - Plugin verifier reports internal API usage

I am registering a toolwindow programmatically but the plugin verifier says it is internal API. What are the alternatives?

inline fun registerToolWindow(id: String, builder: RegisterToolWindowTaskBuilder.() -> Unit): ToolWindow {
  val b = RegisterToolWindowTaskBuilder(id)
  b.builder()
  return registerToolWindow(b.build())
}