code: function closeInstance(dialogue) {
  
    // none may be open yet, or one may be open but may be closing another which is not open
    if (typeof dialogue === 'undefined' || typeof dialogue.options === 'undefined' || !dialoguesOpen.length) {
      return;
    }
  
    dialoguesOpen.forEach(function(dialogueSingle, index) {
      if (dialogueSingle.options.id == dialogue.options.id) {
        dialoguesOpen.splice(index, 1);
      }
    });
  
    if (!dialoguesOpen.length) {
      document.removeEventListener('keyup', handleKeyup);
      document.removeEventListener('mousedown', handleMousedown);
    }
  
    // .off('click.dialogue.action')
  
    // dialogue.container.off(); // needed?
    docBody.removeChild(dialogue.container);
    dialogue.options.onClose.call(dialogue);
  }
docs: call onclose and remove
  @param  {object} data
  @return {null}