40 columns                              |
>>> no spaces around braces
new Foo<  T >();
<<<
new Foo<T>();
>>> space between names
new Foo<  A,B,   C,D>();
<<<
new Foo<A, B, C, D>();
>>> void as a class type argument
new Foo<   void,void    Function()>();
<<<
new Foo<void, void Function()>();
>>> void as a generic method type argument
list.map<   void,void    Function()>();
<<<
list.map<void, void Function()>();
>>> named constructor with implicit "new"
C <  int  ,float>  .named(42);
<<<
C<int, float>.named(42);
>>> nullable type argument
Map<  int  ?  , List<String  ?  > ? >();
<<<
Map<int?, List<String?>?>();