presto-spi/src/main/java/io/prestosql/spi/connector/ConnectorMetadata.java/ConnectorMetadata/getViews
class ConnectorMetadata:    default Map<SchemaTableName, ConnectorViewDefinition> getViews(ConnectorSession session, Optional<String> schemaName)
    {
        Map<SchemaTableName, ConnectorViewDefinition> views = new HashMap<>();
        for (SchemaTableName name : listViews(session, schemaName)) {
            getView(session, name).ifPresent(view -> views.put(name, view));
        }
        return views;
    }