code: private boolean isMatchingUserGroupKey(final JsonNode node) {
          return node.get(aadAuthenticationProperties.getUserGroup().getKey()).asText()
                  .equals(aadAuthenticationProperties.getUserGroup().getValue());
      }
docs: Checks that the JSON Node is a valid User Group to extract User Groups from
  
  @param node - json node to look for a key/value to equate against the {@link UserGroupProperties}
  
  @return true if the json node contains the correct key, and expected value to identify a user group.