J2K: convert method references according to special methods

j2k/testData/fileOrElement/function/java8MRKFunctionExpectedType.kt

@@ -1,4 +1,4 @@
-// ERROR: Type inference failed: Not enough information to infer parameter T in fun <T : kotlin.Any!> emptyList(): kotlin.collections.(Mutable)List<T!>! Please specify it explicitly.
+// ERROR: Type inference failed: Not enough information to infer parameter T in fun <T> emptyList(): kotlin.collections.List<T> Please specify it explicitly.
 package test
 
 import java.util.Collections
@@ -72,7 +72,7 @@ internal class Java8Class {
     }
 
     fun testLibraryFunctions() {
-        val memberFunFromClass = { obj: String -> obj.length() }
+        val memberFunFromClass = { obj: String -> obj.length }
         memberFunFromClass.invoke("str")
     }
 
@@ -85,7 +85,7 @@ internal class Java8Class {
     }
 
     fun testGenericFunctions() {
-        val emptyList = { Collections.emptyList() }
+        val emptyList = { emptyList() }
         emptyList.invoke()
     }
 

j2k/testData/fileOrElement/function/java8MRSamConstructor.kt

@@ -117,11 +117,11 @@ internal class Java8Class {
     }
 
     fun testLibraryFunctions() {
-        val memberFunFromClass = JFunction2<String, Int> { it.length() }
+        val memberFunFromClass = JFunction2<String, Int> { it.length }
         memberFunFromClass.foo("str")
 
-        Thread(Runnable { System.out.println() }).start()
-        Runnable { System.out.println() }.run()
+        Thread(Runnable { println() }).start()
+        Runnable { println() }.run()
     }
 
     fun testOverloads() {
@@ -137,10 +137,10 @@ internal class Java8Class {
     }
 
     fun testGenericFunctions() {
-        val emptyList = JFunction1<List<String>> { Collections.emptyList() }
+        val emptyList = JFunction1<List<String>> { emptyList() }
         emptyList.foo()
-        MethodReferenceHelperClass.staticFun1(JFunction1<List<String>> { Collections.emptyList() })
-        h.memberFun1(JFunction1<List<String>> { Collections.emptyList() })
+        MethodReferenceHelperClass.staticFun1(JFunction1<List<String>> { emptyList() })
+        h.memberFun1(JFunction1<List<String>> { emptyList() })
     }
 
     fun memberFun(): Int {