docs: public com.squareup.okhttp.Call getCharactersCharacterIdPlanetsPlanetIdAsync(Integer characterId, Integer planetId,
              String datasource, String ifNoneMatch, String token, final ApiCallback<CharacterPlanetResponse> callback)
              throws ApiException {
  
          com.squareup.okhttp.Call call = getCharactersCharacterIdPlanetsPlanetIdValidateBeforeCall(characterId,
                  planetId, datasource, ifNoneMatch, token, callback);
          Type localVarReturnType = new TypeToken<CharacterPlanetResponse>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }