Sanger::CGP::Vagrent::Data::AbstractVariation - Abstract Data object representing a variation
This is an abstract data class designed to be extended, it provides a common base class for all variations. Its also privides a placeholder function isValid that must me implemented in child classes
if($var->isValid()){ ....... }
Abstract validation function, checks internal data, must be implemented by subclasses
1 for pass, 0 for fail