public static <K, V> LinkedHashMap<K, V> newLinkedHashMap() {
        return new LinkedHashMap<>();
    }
Creates a <i>mutable</i>, empty, insertion-ordered {@code LinkedHashMap} instance.

<p><b>Note:</b> if mutability is not required, use  ImmutableMap.of() instead.

<p><b>Note for Java 7 and later:</b> this method is now unnecessary and should be treated as
deprecated. Instead, use the {@code LinkedHashMap} constructor directly, taking advantage of
the new <a href="http://goo.gl/iz2Wi">"diamond" syntax</a>.

@return a new, empty {@code LinkedHashMap}
fastexcel-core/src/main/java/cn/idev/excel/util/MapUtils.java