Intelij SDK - problem with constructor's parameter processing

class ShapeEndpoint(val service: ShapeService) {
fun getShape(): String {
  return "Shape"
    }
}

I have created my own Visitor 

class MyKtVisitor:KtTreeVisitorVoid(){
    override fun visitPrimaryConstructor(constructor: KtPrimaryConstructor) {
        println()
        super.visitPrimaryConstructor(constructor)
    }

    override fun visitProperty(property: KtProperty) {
        super.visitProperty(property)
    }
}

I have a problem with obtaining information about "service" property . MyKtVisitor.visitProperty method isn't triggered. I need to get ShapeService PsiClass representation, and its implementation (if it is an interface).  What should I use ?