src/main/java/com/googlecode/objectify/impl/DeleteTypeImpl.java
@Override
	public Result<Void> id(final String id) {
		return ids(Collections.singleton(id));
	}
@Override
	public Result<Void> id(final String id) {
		return ids(Collections.singleton(id));
	}
/* (non-Javadoc)
@see com.googlecode.objectify.cmd.DeleteIds#id(java.lang.String)