public static FieldCache get( Class<?> clazz ) {
        FieldCache fieldCache = instances.get( clazz );

        if( fieldCache == null ) {
            fieldCache = new FieldCache( clazz );
            instances.put( clazz, fieldCache );
        }

        return fieldCache;
    }
Cache to avoid multiple expensive reflection-based look-ups
@since 0.7.1
jgiven-core/src/main/java/com/tngtech/jgiven/impl/util/FieldCache.java