public Boolean isGroupExists(String inlongGroupId) {
        Preconditions.expectNotBlank(inlongGroupId, ErrorCodeEnum.GROUP_ID_IS_EMPTY);

        Response<Boolean> response = ClientUtils.executeHttpCall(inlongGroupApi.isGroupExists(inlongGroupId));
        ClientUtils.assertRespSuccess(response);
        return response.getData();
    }
Check whether a group exists based on the group ID.
inlong-manager/manager-client/src/main/java/org/apache/inlong/manager/client/api/inner/client/InlongGroupClient.java