Assembly: System.Management.Automation (in System.Management.Automation.dll)
A script property is a property that has getter and setter scripts. For more information about script properties as well as other property types defined by the extended type system (ETS), see ETS Properties. For more information about the ETS, see Windows PowerShell Extended Type System (ETS).
Although it is possible to derive from this class, there is no established scenario for doing this and any attempt to do so may result in unexpected behavior.