Fix for https://github.com/perl6/doc/issues/883

gistfile1.txt

=head2 method slurp-rest

    multi method slurp-rest(IO::Handle:D: :$bin!, :$close --> Buf)
    multi method slurp-rest(IO::Handle:D: :$enc, :$close --> Str)

Returns the remaining content of the file from the current file position
(which may have been set by previous reads or by C<seek>.)  If the
adverb C<:bin> is provided a L<Buf> will be returned,
otherwise the return value will be a C<Str> with the optional encoding C<:enc>.
Specifying the adverb C<:close> will cause the filehandle to be closed when 
the call has finished.

=for code :skip-test
my $fh = open("content.txt");
my $line = $fh.get;
my $rest-of-file = $fh.slurp-rest(:close);