create method from usage: treat polyadic expressions as for completion by containing expression (IDEA-151432)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createMethodFromUsage/afterPolyadicExpression.java

@@ -0,0 +1,10 @@
+// "Create method 'f'" "true"
+class Test {
+    {
+        long l = f(1) + f(2);
+    }
+
+    private long f(int i) {
+        return 0;
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createMethodFromUsage/beforePolyadicExpression.java

@@ -0,0 +1,6 @@
+// "Create method 'f'" "true"
+class Test {
+    {
+        long l = f(1) + <caret>f(2);
+    }
+}