docs: public com.squareup.okhttp.Call getKillmailsKillmailIdKillmailHashAsync(String killmailHash, Integer killmailId,
              String datasource, String ifNoneMatch, final ApiCallback<KillmailResponse> callback) throws ApiException {
  
          com.squareup.okhttp.Call call = getKillmailsKillmailIdKillmailHashValidateBeforeCall(killmailHash, killmailId,
                  datasource, ifNoneMatch, callback);
          Type localVarReturnType = new TypeToken<KillmailResponse>() {
          }.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }