Parcelable: Support Parcelizer interface in order to be able to customize serialization

plugins/android-extensions/android-extensions-compiler/testData/parcel/box/customSimple.kt

@@ -0,0 +1,34 @@
+// WITH_RUNTIME
+
+@file:JvmName("TestKt")
+package test
+
+import kotlinx.android.parcel.*
+import android.os.Parcel
+import android.os.Parcelable
+
+@MagicParcel
+data class User(val firstName: String, val secondName: String, val age: Int) : Parcelable {
+    private companion object : Parceler<User> {
+        override fun User.write(parcel: Parcel, flags: Int) {
+            parcel.writeString(firstName)
+            parcel.writeString(secondName)
+        }
+
+        override fun create(parcel: Parcel) = User(parcel.readString(), parcel.readString(), 0)
+    }
+}
+
+fun box() = parcelTest { parcel ->
+    val user = User("John", "Smith", 20)
+    user.writeToParcel(parcel, 0)
+
+    val bytes = parcel.marshall()
+    parcel.unmarshall(bytes, 0, bytes.size)
+
+    val user2 = readFromParcel<User>(parcel)
+
+    assert(user.firstName == user2.firstName)
+    assert(user.secondName == user2.secondName)
+    assert(user2.age == 0)
+}