Method insert_or_append

src/cst/mod.rs:1770–1780

(&self, index: Option<usize>, prop_name: &str, value: CstInputValue)

  }

  fn insert_or_append(&self, index: Option<usize>, prop_name: &str, value: CstInputValue) -> CstObjectProp {
    self.ensure_multiline();
    insert_or_append_to_container(
      &CstContainerNode::Object(self.clone()),
      self.properties().into_iter().map(|c| c.into()).collect(),
      index,
      InsertValue::Property(prop_name, value),
    )
    .as_object_prop()
    .unwrap()
  }

  /// Replaces this node with a new value.
  pub fn replace_with(self, replacement: CstInputValue) -> Option<CstNode> {