function parseExpressionStatement() {
            var marker = markerCreate(), expr = parseExpression();
            consumeSemicolon();
            return markerApply(marker, delegate.createExpressionStatement(expr));
        }
function parseExpressionStatement() {
            var marker = markerCreate(), expr = parseExpression();
            consumeSemicolon();
            return markerApply(marker, delegate.createExpressionStatement(expr));
        }
function parseExpressionStatement ( ) { var marker = markerCreate ( ) , expr = parseExpression ( ) ; consumeSemicolon ( ) ; return markerApply ( marker , delegate . createExpressionStatement ( expr ) ) ; }
12.4 Expression Statement
12 . 4 Expression Statement