Pattern: Explicit call to leftShift()
Issue: -
This rule detects when the leftShift(Object) method is called directly in code instead of using the << operator. A groovier way to express this: a.leftShift(b) is this: a << b. This rule can be configured to ignore this.leftShift(Object) using the ignoreThisReference property. It defaults to false, so even leftShift(x) will trigger a violation.
This rule also ignores all calls to super.leftShift(Object).