docs: public MBeanOperationInfo getOperationInfo(String operationName)
          throws OperationNotFoundException, UnsupportedEncodingException {
  
          String decodedOperationName = sanitizer.urlDecode(operationName, encoding);
          Map<String, MBeanOperationInfo> operationMap = getOperationMetadata();
          if (operationMap.containsKey(decodedOperationName)) {
              return operationMap.get(decodedOperationName);
          }
          throw new OperationNotFoundException("Could not find operation " + operationName + " on MBean " +
                  objectName.getCanonicalName());
      }