code: @Override
      public T add(Asset asset, ArchivePath target) throws IllegalArgumentException {
          this.getArchive().add(asset, target);
          return covarientReturn();
      }
docs: {@inheritDoc}
  
  @see org.jboss.shrinkwrap.api.Archive#add(org.jboss.shrinkwrap.api.asset.Asset,
  org.jboss.shrinkwrap.api.ArchivePath)