presto-main/src/main/java/io/prestosql/sql/analyzer/RelationType.java/RelationType/resolveVisibleFieldsWithRelationPrefix
class RelationType:    public List<Field> resolveVisibleFieldsWithRelationPrefix(Optional<QualifiedName> prefix)
    {
        return visibleFields.stream()
                .filter(input -> input.matchesPrefix(prefix))
                .collect(toImmutableList());
    }