FilteredString is a wrapper around string values that can be null/default or an actual value.

NullBool is a wrapper around bool values that can be null or an bool.

NullByteSizeInMb represents size in a byte format in megabytes.

NullFloat64 is a wrapper around float64 values that can be null or a float64.

NullInt is a wrapper around integer values that can be null or an integer.

NullUint64 is a wrapper around uint64 values that can be null or an unint64.

OptionalObject is for situations where we want to differentiate between an empty object, and the object not having been set.

JSONObject represents a JSON object.