presto-parser/src/main/java/io/prestosql/sql/tree/RevokeRoles.java/RevokeRoles/toString
class RevokeRoles:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("roles", roles)
                .add("grantees", grantees)
                .add("adminOptionFor", adminOptionFor)
                .add("grantor", grantor)
                .toString();
    }