Document IO::Handle.slurp-rest

lib/Type/IO/Handle.pod

@@ -94,6 +94,14 @@ Return the current position of the file pointer in bytes.
 
 =head2 method slurp-rest
 
+    multi method slurp-rest(IO::Handle:D: :$bin! --> Buf)
+    multi method slurp-rest(IO::Handle:D: :$enc --> Str)
+
+Return 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|/lib/Type/Buf> will be returned,
+otherwise the return will be a C<Str> with the optional encoding C<:enc>.
+
 =head2 method close
 
 Will close a previously opened filehandle.