code: public void addLdapGroupLink(Object groupIdOrPath, String cn, Integer groupAccess, String provider) throws GitLabApiException {
          GitLabApiForm formData = new GitLabApiForm()
                  .withParam("cn",  cn, true)
                  .withParam("group_access", groupAccess, true)
                  .withParam("provider",  provider, true);
          post(Response.Status.CREATED, formData, "groups", getGroupIdOrPath(groupIdOrPath), "ldap_group_links");
      }
docs: Adds an LDAP group link.
  
  <pre><code>GitLab Endpoint: POST /groups/:id/ldap_group_links</code></pre>
  
  @param groupIdOrPath the group ID, path of the group, or a Group instance holding the group ID or path
  @param cn the CN of a LDAP group
  @param groupAccess the minimum access level for members of the LDAP group
  @param provider the LDAP provider for the LDAP group
  @throws GitLabApiException if any exception occurs