introduce: process chained method calls during same occurrences processing (IDEA-124349)

java/java-tests/testData/refactoring/inplaceIntroduceParameter/chainMethodCall.java

@@ -0,0 +1,23 @@
+class Test {
+
+  private void test() {
+    TestSubject subject = new TestSubject();
+    boolean flag = false;
+
+    if (subject.getSubject2().get<caret>Val() != flag) {
+      System.out.println(subject.getSubject2().getVal());
+    }
+  }
+
+  public static class TestSubject {
+    public TestSubject2 getSubject2() {
+      return new TestSubject2();
+    }
+  }
+
+  public static class TestSubject2 {
+    public boolean getVal() {
+      return true;
+    }
+  }
+}

java/java-tests/testData/refactoring/inplaceIntroduceParameter/chainMethodCall_after.java

@@ -0,0 +1,23 @@
+class Test {
+
+  private void test(boolean val) {
+    TestSubject subject = new TestSubject();
+    boolean flag = false;
+
+    if (val != flag) {
+      System.out.println(val);
+    }
+  }
+
+  public static class TestSubject {
+    public TestSubject2 getSubject2() {
+      return new TestSubject2();
+    }
+  }
+
+  public static class TestSubject2 {
+    public boolean getVal() {
+      return true;
+    }
+  }
+}