[tree generators] Factor out common transformer printing logic

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/print/TransformerPrinter.kt

@@ -17,7 +17,7 @@ internal class TransformerPrinter(
     printer: SmartPrinter,
     override val visitorType: ClassRef<*>,
     private val rootElement: Element,
-) : AbstractVisitorPrinter<Element, Field>(printer) {
+) : AbstractTransformerPrinter<Element, Field>(printer) {
 
     override val visitorSuperType: ClassRef<PositionTypeParameterRef>
         get() = elementVisitorType.withArgs(rootElement, dataTypeVariable)
@@ -30,9 +30,6 @@ internal class TransformerPrinter(
 
     override fun visitMethodReturnType(element: Element) = element.getTransformExplicitType()
 
-    override val allowTypeParametersInVisitorMethods: Boolean
-        get() = false
-
     context(ImportCollector)
     override fun printMethodsForElement(element: Element) {
         printer.run {

compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/print/TransformerVoidPrinter.kt

@@ -20,7 +20,7 @@ import org.jetbrains.kotlin.utils.withIndent
 internal class TransformerVoidPrinter(
     printer: SmartPrinter,
     override val visitorType: ClassRef<*>,
-) : AbstractVisitorPrinter<Element, Field>(printer) {
+) : AbstractTransformerPrinter<Element, Field>(printer) {
 
     override val visitorTypeParameters: List<TypeVariable>
         get() = emptyList()