@Override
    public List<CoprocessorDescriptor> getCoprocessorDescriptors() {
      List<CoprocessorDescriptor> result = new ArrayList<>();
      for (Map.Entry<Bytes, Bytes> e : getValues().entrySet()) {
        String key = Bytes.toString(e.getKey().get()).trim();
        if (CP_HTD_ATTR_KEY_PATTERN.matcher(key).matches()) {
          toCoprocessorDescriptor(Bytes.toString(e.getValue().get()).trim()).ifPresent(result::add);
        }
      }
      return result;
    }
Return the list of attached co-processor represented by their name className
@return The list of co-processors classNames
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptorBuilder.java