boolean (@NotNull GrBinaryExpression binary, @Nullable PsiElement prevChecked) { if (binary.getOperationTokenType() == GroovyTokenTypes.mPLUS) { final GrExpression left = binary.getLeftOperand(); final GrExpression right = binary.getRightOperand(); if ((left != prevChecked || containsOnlyLiterals(right)) && (right != prevChecked || containsOnlyLiterals(left))) { return true; } } return false; }