code: public Observable<ComapiResult<Void>> removeParticipants(@NonNull final String conversationId, @NonNull final List<String> ids) {
  
          final String token = getToken();
  
          if (sessionController.isCreatingSession()) {
              return getTaskQueue().queueRemoveParticipants(conversationId, ids);
          } else if (TextUtils.isEmpty(token)) {
              return Observable.error(getSessionStateErrorDescription());
          } else {
              return doRemoveParticipants(token, conversationId, ids);
          }
      }
docs: Returns observable to remove list of participants from a conversation.
  
  @param conversationId ID of a conversation to delete.
  @param ids            List of participant ids to be removed.
  @return Observable to remove list of participants from a conversation.