public static MultiValueMap asMultiValueMap(final String key1, final Object value1, final String key2, final Object value2) {
        val wrap = (Map) wrap(key1, wrapList(value1), key2, wrapList(value2));
        return org.springframework.util.CollectionUtils.toMultiValueMap(wrap);
    }
As multi value map.

@param key1   the key 1
@param value1 the value 1
@param key2   the key 2
@param value2 the value 2
@return the multi value map
core/cas-server-core-util-api/src/main/java/org/apereo/cas/util/CollectionUtils.java