Link to related roles/classes in IO roles/classes

lib/Type/IO.pod

@@ -373,4 +373,11 @@ The return value is of L<type Proc::Status|/type/Proc::Status>.
 
     shell 'ls -lR | gzip -9 > ls-lR.gz';
 
+=head1 Related classes
+
+See also the related classes L<IO::FileTestable>, L<IO::Handle> and
+L<IO::Path>.
+
 =end pod
+
+# vim: expandtab shiftwidth=4 ft=perl6

lib/Type/IO/FileTestable.pod

@@ -118,6 +118,11 @@ or more readably:
     my $change_time = DateTime.new($chnge_instant);
     say $change_time;         # e.g. 2015-02-16T12:18:50Z
 
+=head1 Related roles and classes
+
+See also the related role L<IO> and the related classes L<IO::Handle> and
+L<IO::Path>.
+
 =end pod
 
 # vim: expandtab shiftwidth=4 ft=perl6

lib/Type/IO/Handle.pod

@@ -79,6 +79,11 @@ Will close a previously opened filehandle.
 
     $fh.close;
 
+=head1 Related roles and classes
+
+See also the related role L<IO> and the related classes L<IO::FileTestable>
+and L<IO::Path>.
+
 =end pod
 
 # vim: expandtab shiftwidth=4 ft=perl6

lib/Type/IO/Path.pod

@@ -160,6 +160,11 @@ Changes the POSIX permissions of a file to C<$mode>.
 
     $*CWD.chmod(0o700);
 
+=head1 Related roles and classes
+
+See also the related role L<IO> and the related classes L<IO::FileTestable>
+and L<IO::Handle>.
+
 =end pod
 
 # vim: expandtab shiftwidth=4 ft=perl6