nl_tokens: ***************************************************************************
pl_tokens: function ( ) { if ( ! _ . isString ( this . name ) ) { throw new TypeError ( ` ${ this . name } ` ) } if ( ! _ . isString ( this . location ) || ! _ . includes ( VALID_LOCATIONS , this . location ) ) { throw <mask> TypeError ( ` ${ this . location } ` + ` ${ VALID_LOCATIONS } ` ) } }