code: private static String getSourceNameParameter(WorkspaceEntry wsEntry) throws DBCleanException
     {
        try
        {
           return wsEntry.getContainer().getParameterValue(JDBCWorkspaceDataContainer.SOURCE_NAME);
        }
        catch (RepositoryConfigurationException e)
        {
           throw new DBCleanException(e);
        }
     }
docs: Return {@link JDBCWorkspaceDataContainer#SOURCE_NAME} parameter from workspace configuration.