method ref completion: allow non static methods (IDEA-92705)

java/java-tests/testData/codeInsight/completion/normal/MethodReferenceNoStatic.java

@@ -0,0 +1,8 @@
+import java.util.*;
+
+class Test {
+    void aaa(Test p) { return 1; }
+    void test() {
+        Comparator<Test> r2 = Test::<caret>
+    }
+}

java/java-tests/testData/codeInsight/completion/normal/MethodReferenceNoStatic_after.java

@@ -0,0 +1,8 @@
+import java.util.*;
+
+class Test {
+    void aaa(Test p) { return 1; }
+    void test() {
+        Comparator<Test> r2 = Test::test;
+    }
+}

java/java-tests/testSrc/com/intellij/codeInsight/completion/KeywordCompletionTest.java

@@ -99,7 +99,7 @@ public class KeywordCompletionTest extends LightCompletionTestCase {
   public void testDefaultInExtMethod() throws Exception { doTest(false); }
   public void testNullInMethodCall() throws Exception { doTest(true); }
   public void testNullInMethodCall2() throws Exception { doTest(false); }
-  public void testNewInMethodRefs() throws Exception { doTest(false); }
+  public void testNewInMethodRefs() throws Exception { doTest(1, "new"); }
   public void testSpaceAfterInstanceof() throws Exception { doTest(false); }
   public void testAbstractInInterface() throws Exception { doTest(1, "abstract"); }
   public void testCharInAnnotatedParameter() throws Exception { doTest(1, "char"); }

java/java-tests/testSrc/com/intellij/codeInsight/completion/Normal17CompletionTest.groovy

@@ -39,6 +39,8 @@ public class Normal17CompletionTest extends LightFixtureCompletionTestCase {
   public void testOnlyResourcesInResourceList3() { doTest() }
   public void testOnlyResourcesInResourceList4() { doTest() }
 
+  public void testMethodReferenceNoStatic() { doTest() }
+
   public void testResourceParentInResourceList() {
     configureByFile(getTestName(false) + ".java")
     assert 'MyOuterResource' == myFixture.lookupElementStrings[0]