private void validate()

in src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java [129:178]
49 lines of code
15 McCabe index (conditional complexity)

  private void validate(Input input, GroupInfo groupInfo)
      throws IOException, OrmException, NoSuchAccountException, RestApiException,
          ConfigInvalidException {
    if (!isInternalGroup(new AccountGroup.UUID(groupInfo.id))) {
      throw new MethodNotAllowedException(
          String.format(
              "Group with name %s is not an internal group and cannot be imported",
              groupInfo.name));
    }
    if (getGroupByUUID(groupInfo.id) != null) {
      throw new ResourceConflictException(
          String.format("Group with UUID %s already exists", groupInfo.id));
    }
    if (!groupInfo.id.equals(groupInfo.ownerId))
      if (!input.importOwnerGroup && getGroupByUUID(groupInfo.ownerId) == null) {
        throw new PreconditionFailedException(
            String.format(
                "Owner group %s with UUID %s does not exist",
                getGroupName(groupInfo.ownerId), groupInfo.ownerId));
      }
    if (groupInfo.members != null) {
      for (AccountInfo member : groupInfo.members) {
        try {
          accountUtil.resolveUser(api, member);
        } catch (NoSuchAccountException e) {
          throw new PreconditionFailedException(e.getMessage());
        }
      }
    }
    if (!input.importIncludedGroups) {
      if (groupInfo.includes != null) {
        for (GroupInfo include : groupInfo.includes) {
          if (getGroupByUUID(include.id) == null) {
            throw new PreconditionFailedException(
                String.format(
                    "Included group %s with UUID %s does not exist",
                    getGroupName(include.id), include.id));
          }
        }
      }
    }

    for (GroupCreationValidationListener l : groupCreationValidationListeners) {
      try {
        l.validateNewGroup(toCreateGroupArgs(groupInfo));
      } catch (ValidationException e) {
        throw new ResourceConflictException(e.getMessage(), e);
      }
    }
  }