code: public ApiResponse<List<Integer>> postCharactersCharacterIdContactsWithHttpInfo(Integer characterId,
              Float standing, List<Integer> requestBody, String datasource, List<Long> labelIds, String token,
              Boolean watched) throws ApiException {
          com.squareup.okhttp.Call call = postCharactersCharacterIdContactsValidateBeforeCall(characterId, standing,
                  requestBody, datasource, labelIds, token, watched, null);
          Type localVarReturnType = new TypeToken<List<Integer>>() {
          }.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Add contacts Bulk add contacts with same settings --- SSO Scope:
  esi-characters.write_contacts.v1
  
  @param characterId
  An EVE character ID (required)
  @param standing
  Standing for the contact (required)
  @param requestBody
  A list of contacts (required)
  @param datasource
  The server name you would like data from (optional, default to
  tranquility)
  @param labelIds
  Add custom labels to the new contact (optional)
  @param token
  Access token to use if unable to set a header (optional)
  @param watched
  Whether the contact should be watched, note this is only
  effective on characters (optional, default to false)
  @return ApiResponse&lt;List&lt;Integer&gt;&gt;
  @throws ApiException
  If fail to call the API, e.g. server error or cannot
  deserialize the response body