Implement the new fields for inline babel call and inline source block.

src/types/object.rs

@@ -245,6 +245,7 @@ pub struct InlineBabelCall<'s> {
     pub inside_header: Option<&'s str>,
     pub arguments: Option<&'s str>,
     pub end_header: Option<&'s str>,
+    pub post_blank: Option<&'s str>,
 }
 
 #[derive(Debug)]
@@ -253,6 +254,7 @@ pub struct InlineSourceBlock<'s> {
     pub language: &'s str,
     pub parameters: Option<&'s str>,
     pub value: &'s str,
+    pub post_blank: Option<&'s str>,
 }
 
 #[derive(Debug)]
@@ -871,11 +873,15 @@ impl<'s> StandardProperties<'s> for InlineBabelCall<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        None
     }
 
     fn get_post_blank(&self) -> PostBlank {
-        todo!()
+        self.post_blank
+            .map(|text| text.chars().count())
+            .unwrap_or(0)
+            .try_into()
+            .expect("Too much post-blank to fit into a PostBlank.")
     }
 }
 
@@ -885,11 +891,15 @@ impl<'s> StandardProperties<'s> for InlineSourceBlock<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        None
     }
 
     fn get_post_blank(&self) -> PostBlank {
-        todo!()
+        self.post_blank
+            .map(|text| text.chars().count())
+            .unwrap_or(0)
+            .try_into()
+            .expect("Too much post-blank to fit into a PostBlank.")
     }
 }