Implement the new fields for radio link.

src/parser/radio_link.rs

@@ -39,7 +39,7 @@ pub(crate) fn radio_link<'b, 'g, 'r, 's>(
         let rematched_target = rematch_target(context, radio_target, input);
         if let Ok((remaining, rematched_target)) = rematched_target {
             let path = get_consumed(input, remaining);
-            let (remaining, _) = space0(remaining)?;
+            let (remaining, post_blank) = space0(remaining)?;
             let source = get_consumed(input, remaining);
             return Ok((
                 remaining,
@@ -47,6 +47,11 @@ pub(crate) fn radio_link<'b, 'g, 'r, 's>(
                     source: source.into(),
                     children: rematched_target,
                     path: path.into(),
+                    post_blank: if post_blank.len() > 0 {
+                        Some(Into::<&str>::into(post_blank))
+                    } else {
+                        None
+                    },
                 },
             ));
         }

src/types/object.rs

@@ -128,6 +128,7 @@ pub struct RadioTarget<'s> {
 pub struct RadioLink<'s> {
     pub source: &'s str,
     pub path: &'s str,
+    pub post_blank: Option<&'s str>,
     pub children: Vec<Object<'s>>,
 }
 
@@ -671,11 +672,15 @@ impl<'s> StandardProperties<'s> for RadioLink<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        Some(self.path)
     }
 
     fn get_post_blank(&self) -> PostBlank {
-        todo!()
+        self.post_blank
+            .map(|post_blank| post_blank.chars().count())
+            .unwrap_or(0)
+            .try_into()
+            .expect("Too much post-blank to fit into a PostBlank.")
     }
 }