pkg io/fs, method (FileMode) IsDir() bool
pkg io/fs, method (FileMode) IsRegular() bool
pkg io/fs, method (FileMode) Perm() FileMode
pkg io/fs, method (FileMode) String() string
pkg io/fs, method (FileMode) Type() FileMode
pkg io/fs, type DirEntry interface { Info, IsDir, Name, Type }
pkg io/fs, type DirEntry interface, Info() (FileInfo, error)
pkg io/fs, type DirEntry interface, IsDir() bool

</p>

<pre>
type GPoint[P any] = Point
type HPoint        = *GPoint[int]
type IPair         = Pair[int, int]

func (*GPoint[P]) Draw(P)   { … }  // illegal: alias must not be generic
func (HPoint) Draw(P)       { … }  // illegal: alias must not denote instantiated type GPoint[int]
func (*IPair) Second() int  { … }  // illegal: alias must not denote instantiated type Pair[int, int]
</pre>