code: @Override
      public T deletePackage(Package pack) throws IllegalArgumentException {
          Validate.notNull(pack, "Package name must be specified");
  
          return deletePackages(false, pack);
      }
docs: /*
  (non-Javadoc)
  
  @see org.jboss.shrinkwrap.api.container.ClassContainer#deletePackage(java.lang.Package)