Java8CollectionsApiInspection & Java8ReplaceMapGetInspection merged into Java8MapApiInspection; support method references in computeIfAbsent

fix for IDEA-163932 Map.get suggested replacement with Map.getOrDefault is misleading

java/java-tests/testData/inspection/java8MapApi/beforeGetOrDefaultLocal.java

@@ -0,0 +1,15 @@
+// "Replace with 'getOrDefault' method call" "true"
+import java.util.Map;
+
+public class Main {
+    public void testGetOrDefault(Map<String, String> map, String key, Main other) {
+        String a = null, str = map.get(key);
+        // before if
+        if(str == nu<caret>ll) {
+            // comment
+            str = "";
+            /* after comment */
+        }
+        System.out.println(str);
+    }
+}