Implement the new fields for radio target.

src/parser/radio_link.rs

@@ -134,7 +134,7 @@ pub(crate) fn radio_target<'b, 'g, 'r, 's>(
     ))(remaining)?;
 
     let (remaining, _closing) = tag(">>>")(remaining)?;
-    let (remaining, _trailing_whitespace) =
+    let (remaining, post_blank) =
         maybe_consume_object_trailing_whitespace_if_not_exiting(context, remaining)?;
     let source = get_consumed(input, remaining);
     Ok((
@@ -142,6 +142,7 @@ pub(crate) fn radio_target<'b, 'g, 'r, 's>(
         RadioTarget {
             source: source.into(),
             value: raw_value.into(),
+            post_blank: post_blank.map(Into::<&str>::into),
             children,
         },
     ))

src/types/object.rs

@@ -120,6 +120,7 @@ pub struct RegularLink<'s> {
 pub struct RadioTarget<'s> {
     pub source: &'s str,
     pub value: &'s str,
+    pub post_blank: Option<&'s str>,
     pub children: Vec<Object<'s>>,
 }
 
@@ -679,11 +680,15 @@ impl<'s> StandardProperties<'s> for RadioTarget<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        Some(self.value)
     }
 
     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.")
     }
 }