this.evaluationInstances = new ArrayList<VariantEvaluator>(evaluationClasses.size());
for ( final Class<? extends VariantEvaluator> c : evaluationClasses ) {
try {
final VariantEvaluator eval = c.newInstance();
if ( doInitialize ) eval.initialize(walker);
evaluationInstances.add(eval);
} catch (InstantiationException e) {
throw new ReviewedGATKException("Unable to instantiate eval module '" + c.getSimpleName() + "'", e);
} catch (IllegalAccessException e) {
throw new ReviewedGATKException("Illegal access error when trying to instantiate eval module '" + c.getSimpleName() + "'", e);