Number of parameter constituents of this class.
Sequence of the names of parameter constituents of this class.
1st parameter name.
2nd parameter name.
3rd parameter name.
The optional default value for parameter 1.
The optional default value for parameter 2.
The optional default value for parameter 3.
The RSON type of T. This the only data that a ShowT instance requires, that can't be implemented through delegation to an object of type Show.