choose the most specific candidate after type inference

compiler/testData/diagnostics/tests/inference/mostSpecificAfterInference.kt

@@ -0,0 +1,22 @@
+package i
+
+//+JDK
+import java.util.*
+
+fun <T, R> Collection<T>.map1(<!UNUSED_PARAMETER!>f<!> : (T) -> R) : List<R> {<!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>
+fun <T, R> java.lang.Iterable<T>.map1(<!UNUSED_PARAMETER!>f<!> : (T) -> R) : List<R> {<!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>
+
+fun test(list: List<Int>) {
+    val res = list.map1 { it }
+    //check res is not of error type
+    <!TYPE_MISMATCH!>res<!> : String
+}
+
+fun <T> Collection<T>.foo() {}
+fun <T> java.lang.Iterable<T>.foo() {}
+
+fun test1(list: List<Int>) {
+    val res = list.foo()
+    //check res is not of error type
+    <!TYPE_MISMATCH!>res<!> : String
+}