code: @Initialize(scope = Scope.SCENARIO)
      public void initializeContextVariables() {
          Properties p = new HandlerConfigLoader().loadProperties(configurationManager, "context");
          for ( Map.Entry e : p.entrySet()) {
              ChorusContext.getContext().put(e.getKey().toString(), e.getValue().toString());
          }
      }
docs: Load any context properties defined in handler configuration files