+These effect storage for whole object instances; not just one attribute:
+L<MooseX::CustomInitArgs> - if you have (as in the SYNOPSIS) one attribute
+which is calculated from another (diameter from radius), MooseX::CustomInitArgs
+will allow you to accept both attributes in the constructor (i.e. accept a
+diameter in the constructor, halve it, and set the radius attribute).
Toby Inkster E<lt>email@example.comE<gt>.