StreamApiMigrationInspection: enable flatMap with primitive type change

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterFlatMapChangePrimitiveType.java

@@ -0,0 +1,13 @@
+// "Replace with count()" "true"
+import java.util.Arrays;
+import java.util.function.Function;
+import java.util.stream.IntStream;
+import java.util.stream.LongStream;
+import java.util.stream.Stream;
+
+public class Test {
+  public void test() {
+      long count = IntStream.range(0, 10).mapToObj(i -> LongStream.range(0, i)).flatMapToLong(Function.identity()).mapToObj(l -> Stream.of("x", "y", "z")).flatMap(Function.identity()).flatMapToInt(s -> IntStream.range(0, s.length())).count();
+      System.out.println(count);
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeFlatMapChangePrimitiveType.java

@@ -0,0 +1,18 @@
+// "Replace with count()" "true"
+import java.util.Arrays;
+
+public class Test {
+  public void test() {
+    long count = 0;
+    for(int <caret>i=0; i<10; i++) {
+      for(long l = 0; l < i; l++) {
+        for(String s : Arrays.asList("x", "y", "z")) {
+          for(int k = 0; k < s.length(); k++) {
+            count++;
+          }
+        }
+      }
+    }
+    System.out.println(count);
+  }
+}