How to use the dropzone.ADDED function in dropzone

.split(",")
          .map(function(t) {
            return t.trim();
          }).filter(function(t) {
            return t.length > 0;
          })
          .join(",");
      } catch(exp) {
        tags = form.find('#tags');
      }

      data.append('tags', tags);

      // attach images to the data
      // var files = form.find('#image-mobile')[0].files;
      var files = myDropzone.getFilesWithStatus(Dropzone.ADDED);
      for(var i = 0; i < files.length; i++) {
        var file = files[i];
        data.append('image-mobile['+i+']', file);
      }

      $.ajax({
        url: '/api/v1/submissions/',
        data: data,
        cache: false,
        contentType: false,
        processData: false,
        type: 'POST',
        success: function(submission){
          // REDIRECT TO SUBMISSION PAGE
          self.trigger('created', submission);
        },

addedExistFile(attachment) {
        const multiple = !!this.data.get('multiple');
        const maxFiles = multiple ? this.data.get('max-files') : 1;

        if (this.dropZone.files.length >= maxFiles) {
            alert('Max files exceeded');
            return;
        }

        /** todo: Дублируется дважды */
        const file = {
            id: attachment.id,
            name: attachment.original_name,
            size: attachment.size,
            type: attachment.mime,
            status: Dropzone.ADDED,
            url: `${attachment.url}`,
            data: attachment,
        };

        this.dropZone.emit('addedfile', file);
        this.dropZone.emit('thumbnail', file, file.url);
        this.dropZone.emit('complete', file);
        this.dropZone.files.push(file);
        this.resortElement();
    }
}