presto-parser/src/main/java/io/prestosql/sql/tree/ArithmeticUnaryExpression.java/ArithmeticUnaryExpression/negative
class ArithmeticUnaryExpression:    public static ArithmeticUnaryExpression negative(Expression value)
    {
        return new ArithmeticUnaryExpression(Optional.empty(), Sign.MINUS, value);
    }