presto-main/src/main/java/io/prestosql/metadata/MetadataManager.java/MetadataManager/createSchema
class MetadataManager:    @Override
    public void createSchema(Session session, CatalogSchemaName schema, Map<String, Object> properties)
    {
        CatalogMetadata catalogMetadata = getCatalogMetadataForWrite(session, schema.getCatalogName());
        CatalogName catalogName = catalogMetadata.getCatalogName();
        ConnectorMetadata metadata = catalogMetadata.getMetadata();
        metadata.createSchema(session.toConnectorSession(catalogName), schema.getSchemaName(), properties);
    }