code: @Pure
  	@Inline(value = "ReflectionUtil.getPackageClasses(($1).getName())", imported = {ReflectionUtil.class})
  	public static Collection<Class<?>> getPackageClasses(Package pkg) {
  		return getPackageClasses(pkg.getName());
  	}
docs: Replies the list of the classes in the given package.
  
  @param pkg is the package to explore.
  @return the list of classes in the package.