docs: public GetInvitationConfigurationResult withPrivateSkillIds(String... privateSkillIds) {
          if (this.privateSkillIds == null) {
              setPrivateSkillIds(new java.util.ArrayList<String>(privateSkillIds.length));
          }
          for (String ele : privateSkillIds) {
              this.privateSkillIds.add(ele);
          }
          return this;
      }