code: def _StartAnalysisProcesses(self, storage_writer, analysis_plugins):
      logger.info('Starting analysis plugins.')
      for analysis_plugin in analysis_plugins.values():
        self._analysis_plugins[analysis_plugin.NAME] = analysis_plugin
        process = self._StartWorkerProcess(analysis_plugin.NAME, storage_writer)
        if not process:
          logger.error('Unable to create analysis process: {0:s}'.format(
              analysis_plugin.NAME))
      logger.info('Analysis plugins running')