Presentation: Render function signature in RefactoringDescriptionLocation

#KT-12943 Fixed

core/descriptors/src/org/jetbrains/kotlin/renderer/DescriptorRenderer.kt

@@ -190,6 +190,7 @@ interface DescriptorRendererOptions {
     var renderAccessors: Boolean
     var renderDefaultAnnotationArguments: Boolean
     var alwaysRenderModifiers: Boolean
+    var renderConstructorKeyword: Boolean
 }
 
 object ExcludedTypeAnnotations {

core/descriptors/src/org/jetbrains/kotlin/renderer/DescriptorRendererImpl.kt

@@ -626,10 +626,14 @@ internal class DescriptorRendererImpl(
         renderVisibility(constructor.visibility, builder)
         renderMemberKind(constructor, builder)
 
-        builder.append(renderKeyword("constructor"))
+        if (renderConstructorKeyword) {
+            builder.append(renderKeyword("constructor"))
+        }
         if (secondaryConstructorsAsPrimary) {
             val classDescriptor = constructor.containingDeclaration
-            builder.append(" ")
+            if (renderConstructorKeyword) {
+                builder.append(" ")
+            }
             renderName(classDescriptor, builder)
             renderTypeParameters(constructor.typeParameters, builder, false)
         }

core/descriptors/src/org/jetbrains/kotlin/renderer/DescriptorRendererOptionsImpl.kt

@@ -97,4 +97,6 @@ internal class DescriptorRendererOptionsImpl : DescriptorRendererOptions {
                     + ExcludedTypeAnnotations.internalAnnotationsForResolve)
 
     override var alwaysRenderModifiers by property(false)
+
+    override var renderConstructorKeyword by property(true)
 }