presto-main/src/main/java/io/prestosql/sql/analyzer/Field.java/Field/newUnqualified
class Field:    public static Field newUnqualified(Optional<String> name, Type type)
    {
        requireNonNull(name, "name is null");
        requireNonNull(type, "type is null");

        return new Field(Optional.empty(), name, type, false, Optional.empty(), Optional.empty(), false);
    }