nl_tokens: Query the reference instance information by the given reference class
pl_tokens: function queryRefInstance ( selector ) { let isSelectAll = <mask> . isArray ( selector ) ; isSelectAll && ( selector = selector [ 0 ] ) ; let result ; if ( isSelectAll ) { if ( typeof this . selectAllComponents === 'function' ) { result = this . selectAllComponents ( selector ) ; } result || ( result = [ ] ) ; } else if ( typeof this . selectComponent === 'function' ) { result = this . selectComponent ( selector ) ; } return result ; }