groupApi removeMember remove subgroup and projects member

1. add subgroup member
2. add group member
3. remove group member expect group member has been removed and keep subgroup member actual subgroup also has been removed

test case: ` @Test public void removeMember() throws GitLabApiException, MalformedURLException { Integer groupId = 3, userId = 2; Integer subGroupId = 5; GitLabApi gitLabApi = new GitLabApi("http://10.10.102.202:33200/", "glpat-mW-1QqaqTquBGdGt8UY6"); GroupApi groupApi = gitLabApi.getGroupApi();

    Member groupMember = groupApi.getOptionalMember(groupId, userId, true).orElse(null);
    if (groupMember == null) {
        groupApi.addMember(groupId, userId, AccessLevel.MAINTAINER);
        groupMember = groupApi.getOptionalMember(groupId, userId).orElse(null);
    }
    Assert.assertNotNull(groupMember);

    Member subGroupMember = groupApi.getOptionalMember(subGroupId, userId).orElse(null);
    if (subGroupMember == null) {
        groupApi.addMember(subGroupId, userId, AccessLevel.MAINTAINER);
        subGroupMember = groupApi.getOptionalMember(subGroupId, userId).orElse(null);
    }
    Assert.assertNotNull(subGroupMember);

    Group group = groupApi.getGroup(groupId);
    groupApi.removeMember(group.getId(), userId);
    groupMember = groupApi.getOptionalMember(groupId, userId).orElse(null);
    Assert.assertNull(groupMember);
    subGroupMember = groupApi.getOptionalMember(subGroupId, userId).orElse(null);
    Assert.assertNotNull("sub group member has been removed", subGroupMember);
}

`

What you describes seems to be related to how GitLab itself works. I don't think we can influence this at client side.