code: public void readStacktraceConfig(@Observes @Initialized(ApplicationScoped.class) ServletContext sc) {
  		String stacktrace;
  		if(ocelotConfigurationsStack.isUnsatisfied()) {
  			stacktrace = sc.getInitParameter(Constants.Options.STACKTRACE_LENGTH);
  			if(stacktrace==null) {
  				stacktrace = DEFAULTSTACKTRACE;
  			} else {
  				logger.debug("Read '{}' option in web.xml : '{}'.", Constants.Options.STACKTRACE_LENGTH, stacktrace);
  			}
  		} else {
  			stacktrace = ocelotConfigurationsStack.get();
  			logger.debug("Read '{}' option from producer : '{}'.", Constants.Options.STACKTRACE_LENGTH, stacktrace);
  		}
  		int stacktracelenght = Integer.parseInt(stacktrace);
  		logger.debug("'{}' value : '{}'.", Constants.Options.STACKTRACE_LENGTH, stacktracelenght);
  		setStacktracelength(stacktracelenght);
  	}
docs: Read in web.xml the optional STACKTRACE_LENGTH config and set it in StacktraceConfigurationManager
  @param sc