presto-main/src/main/java/io/prestosql/connector/informationschema/InformationSchemaMetadata.java/InformationSchemaMetadata/listTableColumns
class InformationSchemaMetadata:    @Override
    public Map<SchemaTableName, List<ColumnMetadata>> listTableColumns(ConnectorSession session, SchemaTablePrefix prefix)
    {
        requireNonNull(prefix, "prefix is null");
        ImmutableMap.Builder<SchemaTableName, List<ColumnMetadata>> builder = ImmutableMap.builder();
        return Arrays.stream(InformationSchemaTable.values())
                .filter(table -> prefix.matches(table.getSchemaTableName()))
                .collect(toImmutableMap(InformationSchemaTable::getSchemaTableName, table -> table.getTableMetadata().getColumns()));
    }