The IImmutable interface

TODO: Specify when to use it

How to implement it

To implement the IImmutable interface, you need to make two actions:

1. Inherit from it: i.e. public class YourObject : IImmutable
2. The properties you want to be immutable must be public, get only, and contain a default value. i.e. public string Title { get; } = ""
3. All the properties that are not immutable, can follow the usual BHoM conventions, public, get and set, and have a default value
4. It must implement only one constructor, whose parameters are types of all the immutable properties of the object.

For an example, you can check the BH.oM.Structure.SectionProperties.SteelSection from the Structure_oM: https://github.com/BHoM/BHoM/blob/master/Structure_oM/SectionProperties/SteelSection.cs