Add ignore for doc.
@@ -130,10 +130,10 @@ pub trait ValueType: Debug + Clone + PartialEq + Sized + 'static {
/// So when using this method, we cannot unwrap the returned value directly.
/// We should:
///
- /// ```
+ /// ```ignore
/// // builder: ColumnBuilder
/// // T: ValueType
- /// let Some(inner) = T::try_downcast_builder(&mut builder) {
+ /// if let Some(inner) = T::try_downcast_builder(&mut builder) {
/// inner.push(...);
/// } else {
/// builder.push(...);
