```rust use orgize::{Org, ast::SourceBlock}; let block = Org::parse("#+begin_src emacs-lisp -n 20\n#+end_src").first_node:: ().unwrap(); assert_eq!(block.switches().unwrap(), "-n 20"); let block = Org::parse("#+begin_src emacs-lisp -n 20 -r :tangle yes \n#+end_src").first_node:: ().unwrap(); assert_eq!(block.switches().unwrap(), "-n 20 -r"); let block = Org::parse("#+begi
(&self)
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