40 columns                              |
### Tests for anonymous function expressions: "lambdas".
>>> Generic.
f = <  T  ,  S  extends  T  >  (  T  param  )  {  }  ;
<<<
f = <T, S extends T>(T param) {};
>>> Async with block body.
f = (  )  async  {  }  ;
<<<
f = () async {};
>>> Async with expression body.
f = (  )  async  =>  1;
<<<
f = () async => 1;
>>> Sync* with block body.
f = (  )  sync  *  {  }  ;
<<<
f = () sync* {};
>>> Sync* with expression body.
f = (  )  sync  *  =>  1;
<<<
f = () sync* => 1;
>>> Aync* with block body.
f = (  )  async  *  {  }  ;
<<<
f = () async* {};
>>> Aync* with expression body.
f = (  )  async  *  =>  1;
<<<
f = () async* => 1;
>>> Split parameter list.
function = (int firstArgument, int secondArgument) { print('42'); };
<<<
function =
    (
      int firstArgument,
      int secondArgument,
    ) {
      print('42');
    };