{"type":"rich","version":1.0,"title":"Demonstrating mutability","width":2810,"html":"<a href=\"https://asciinema.org/a/371055\" target=\"_blank\"><img src=\"https://asciinema.org/a/371055.png\" alt=\"Demonstrating mutability\" width=\"2810\"></a>","height":1400,"author_name":"ml-git","author_url":"https://asciinema.org/~ml-git","provider_name":"asciinema","provider_url":"https://asciinema.org/","thumbnail_height":1400,"thumbnail_url":"https://asciinema.org/a/371055.png","thumbnail_width":2810}