docs: public TableMetadata getTableMetadata(String tableName){
  		if(tableName == null) return null;
  		
  		try {
  			tableMetadataStatement.setInt(1, tableName.hashCode());
  			ResultSet set = tableMetadataStatement.executeQuery();
  			
  			return transformToTableMetadata(set);
  		} catch (SQLException e) {
  			throw new BackendException("Could not get TableMetadata for table '" + tableName + "'", e);
  		}
  	}