nl_tokens: 逻辑删除情况下加工查询对象
pl_tokens: function tombstoneQuery ( name , query , opts ) { const tombstoneKey = opts && ( typeof opts . tombstoneKeyGetter === 'function' ) ? opts . tombstoneKeyGetter ( name ) : null ; if ( ! tombstoneKey ) return query ; const cond = { [ tombstoneKey ] : { $ne : true } } ; if ( query . _conditions . $and && Array . isArray ( query . _conditions . $and ) ) { query . _conditions . $and . push ( cond ) ; } else { <mask> . assign ( query . _conditions , cond ) ; } return query ; }