IDE: folding imports

idea/testData/folding/class.kt

@@ -0,0 +1,4 @@
+class A <fold text='{...}'>{
+    val a = 1
+    val b = 1
+}</fold>

idea/testData/folding/function.kt

@@ -0,0 +1,4 @@
+fun foo() <fold text='{...}'>{
+    val a = 1
+    val b = 1
+}</fold>

idea/testData/folding/imports.kt

@@ -0,0 +1,6 @@
+import <fold text='...'>kotlin.*
+import kotlin.*
+import kotlin.*
+import kotlin.*</fold>
+
+fun foo() {}

idea/testData/folding/object.kt

@@ -0,0 +1,4 @@
+object A <fold text='{...}'>{
+    val a = 1
+    val b = 1
+}</fold>