code: public com.squareup.okhttp.Call postPackageServiceJsonAsync(String path, String cmd, String groupName, String packageName, String packageVersion, String charset_, Boolean force, Boolean recursive, File _package, final ApiCallback<String> callback) throws ApiException {
  
          ProgressResponseBody.ProgressListener progressListener = null;
          ProgressRequestBody.ProgressRequestListener progressRequestListener = null;
  
          if (callback != null) {
              progressListener = new ProgressResponseBody.ProgressListener() {
                  @Override
                  public void update(long bytesRead, long contentLength, boolean done) {
                      callback.onDownloadProgress(bytesRead, contentLength, done);
                  }
              };
  
              progressRequestListener = new ProgressRequestBody.ProgressRequestListener() {
                  @Override
                  public void onRequestProgress(long bytesWritten, long contentLength, boolean done) {
                      callback.onUploadProgress(bytesWritten, contentLength, done);
                  }
              };
          }
  
          com.squareup.okhttp.Call call = postPackageServiceJsonValidateBeforeCall(path, cmd, groupName, packageName, packageVersion, charset_, force, recursive, _package, progressListener, progressRequestListener);
          Type localVarReturnType = new TypeToken<String>(){}.getType();
          apiClient.executeAsync(call, localVarReturnType, callback);
          return call;
      }
docs: (asynchronously)
  
  @param path  (required)
  @param cmd  (required)
  @param groupName  (optional)
  @param packageName  (optional)
  @param packageVersion  (optional)
  @param charset_  (optional)
  @param force  (optional)
  @param recursive  (optional)
  @param _package  (optional)
  @param callback The callback to be executed when the API call finishes
  @return The request call
  @throws ApiException If fail to process the API call, e.g. serializing the request body object