JavaScript Object Notation (JSON) is a subset of the JavaScript language used for the definition and exchange of data. While I’m not proposing that we create a similar standard using C#, I do want to illustrate some of the rich object initialization syntax of the language. This terse syntax can come in handy when defining data for things like unit tests, templating models, etc.
It's probably not all that relevant but one could name it 'CPON' since the # symbol is called pound, I know it's a little less obvious, but it could still suffice
C# Object Notation | Brice’s Blog
JavaScript Object Notation (JSON) is a subset of the JavaScript language used for the definition and exchange of data. While I’m not proposing that we create a similar standard using C#, I do want to illustrate some of the rich object initialization syntax of the language. This terse syntax can come in handy when defining data for things like unit tests, templating models, etc.
https://www.bricelam.net/2015/02/01/csharp-object-notation.html