docs: public List<String> describeOperation(String operationName) {
          List<String> list = new ArrayList<String>();
          try {
              MBeanOperationInfo[] operations = beanInfo.getOperations();
              for (MBeanOperationInfo operation : operations) {
                  if (operation.getName().equals(operationName)) {
                      list.add(describeOperation(operation));
                  }
              }
          } catch (Exception e) {
              throwException("Could not describe operations matching name '" + operationName + "'. Reason: ", e);
          }
          return list;
      }