docs: public com.squareup.okhttp.Call deleteCharactersCharacterIdContactsAsync(Integer characterId,
              List<Integer> contactIds, String datasource, String token, final ApiCallback<Void> callback)
              throws ApiException {
  
          com.squareup.okhttp.Call call = deleteCharactersCharacterIdContactsValidateBeforeCall(characterId, contactIds,
                  datasource, token, callback);
          apiClient.executeAsync(call, callback);
          return call;
      }