opens the attachment sidebar with the attachment for the current record.
show - open(true = default) or closes(false) the attachment sidebar. You don't have to worry if it is opend or closed before, but show will also refresh an open attachment.
brixxApi.showAttachments(); //open the sidebar
brixxApi.showAttachments(true); //open the sidebar
brixxApi.showAttachments(false); //closes the sidebar