code: @Override
      @NonNull
      public String[] selectImports(@NonNull AnnotationMetadata importingClassMetadata) {
          boolean enabledTxc = Boolean.valueOf(
                  Objects.requireNonNull(
                          importingClassMetadata.getAnnotationAttributes(EnableDistributedTransaction.class.getName()))
                          .get("enableTxc").toString());
          List<String> importClasses = new ArrayList<>();
          importClasses.add("com.codingapi.txlcn.txmsg.MessageConfiguration");
          if (enabledTxc) {
              importClasses.add(TxcConfiguration.class.getName());
          }
          return importClasses.toArray(new String[0]);
      }
docs: resolve the spi classes
  
  @param importingClassMetadata importingClassMetadata
  @return spi classes