code: @ConditionalOnClass({Context.class, DataLinkType.class})
      //@ConditionalOnBean(Context.class)
      @Bean(DATALINK_TYPE_BEAN_NAME)
      public DataLinkType dataLinkType(@Qualifier(CONTEXT_BEAN_NAME) Context context) {
          DataLinkType dataLinkType = context.pcapDataLink();
          if (LOGGER.isDebugEnabled()) {
              LOGGER.debug("Datalink type: {}.", dataLinkType);
          }
          return dataLinkType;
      }
docs: A handle link type.
  @param context application context.
  @return returns {@link com.ardikars.jxpacket.common.layer.DataLinkLayer}.