Converter tests:

Change test data files extension to "java"

j2k/tests/testData/ast/methodCallExpression/genericMethod.java

@@ -0,0 +1,13 @@
+//file
+package demo;
+
+class Map {
+  <K, V> void put(K k, V v) {}
+}
+
+class U {
+  void test() {
+    Map m = new Map();
+    m.<String, int>put("10", 10);
+  }
+}