Fixes StrDistance, refs #2683

doc/Type/StrDistance.pod6

@@ -4,11 +4,13 @@
 
 =SUBTITLE Contains the result of a string transformation.
 
-C<StrDistance> objects are used to represent the return of the L<string transformation|/syntax/tr$SOLIDUS$SOLIDUS$SOLIDUS> operator.
+C<StrDistance> objects are used to represent the return of the
+L<string transformation|/syntax/tr$SOLIDUS$SOLIDUS$SOLIDUS> operator.
 
     say (($ = "fold") ~~ tr/old/new/).^name;  # OUTPUT: «StrDistance␤»
 
-A C<StrDistance> object will stringify to the resulting string after the transformation, and will numify to the distance between the two strings.
+A C<StrDistance> object will stringify to the resulting string after the
+transformation, and will numify to the distance between the two strings.
 
 =begin code
 my $str = "fold";
@@ -19,20 +21,37 @@ say +$str-dist;  # OUTPUT: «3␤»                                       │
 
 =head1 Methods
 
-=head2 before
+=head2 method before
 
-Property that returns the string before the transformation:
+This is actually a class attribute, and called as a method returns the string
+before the transformation:
 
 =for code :preamble<my $str = "fold"; my $str-dist = ($str ~~ tr/old/new/); >
 say $str-dist.before; #OUTPUT: «fold␤»
 
-=head2 after
+=head2 method after
 
-Returns the string after the transformation
+Also a class attribute, returns the string after the transformation
 
 =for code :preamble<my $str = "fold"; my $str-dist = ($str ~~ tr/old/new/); >
 say $str-dist.after; #OUTPUT: «fnew␤»
 
+=head2 method Bool
+
+Returns C<True> if before is different from C<After>.
+
+=head2 method Numeric
+
+Returns the distance as a number.
+
+=head2 method Int
+
+Defined as:
+
+    multi method Int(StrDistance:D:)
+
+Returns the distance between the string before and after the transformation.
+
 =end pod
 
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