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package SPVM::Stringer;
1;
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=head1 Name
SPVM::Stringer -  Interface Type for Stringing Callback
=head1 Usage
   
  use Stringer;
  use Point;
   
  my $stringer = (Stringer)method : string ($object : object) {
    my $point = (Point)$object;
    my $string = $point->to_string;
     
    return $string;
  };
   
  my $point = Point->new_xy(1, 2);
  my $string = $stringer->($point);
=head1 Description
L<Stringer|SPVM::Stringer> is the interface type for the stringing callback.
=head1 Interface Methods
  required method : string ($object : object)
The implementation must receive a object and return the string that represents the object.