WGAPluginSet pluginSet = _core.getPluginSet();
List<WorkspaceOperation> operations = new ArrayList<WorkspaceOperation>();
Iterator<DataSource> pluginIt = plugins.iterator();
while (pluginIt.hasNext()) {
InstallPluginOperation operation = pluginSet.loadPluginToWorkspace(pluginIt.next().getInputStream());
operations.add(operation);
}
pluginSet.performOperations(operations);
pluginSet.save();