Protected Readonly cardinalityReadonly sizeReadonly withStatic ClassInspired from: https://docs.microsoft.com/en-us/dotnet/api/system.type.isassignablefrom For (most) generics, type invariance is expected (assumed) - neither covariance, nor contravariance are supported yet (will be supported in a next release).
One exception though: for OptionType, we simulate covariance for missing (not provided) values.
For example, Option
Also see:
Static equalsStatic equalsStatic is
An abstraction that represents a Type. Handles both generic and non-generic types. Once instantiated as a Type, a generic type is "closed" (as opposed to "open").