public static <E> HashSet<E> newHashSet(Iterable<? extends E> elements) {
    """
	Creates a <i>mutable</i> {@code HashSet} instance containing the given elements. A very thin
	convenience for creating an empty set then calling {@link Collection#addAll} or {@link
	Iterables#addAll}.
	
	<p><b>Note:</b> if mutability is not required and the elements are non-null, use {@link
	ImmutableSet#copyOf(Iterable)} instead. (Or, change {@code elements} to be a {@link
	FluentIterable} and call {@code elements.toSet()}.)
	
	<p><b>Note:</b> if {@code E} is an {@link Enum} type, use {@link #newEnumSet(Iterable, Class)}
	instead.
	
	<p><b>Note for Java 7 and later:</b> if {@code elements} is a {@link Collection}, you don't
	need this method. Instead, use the {@code HashSet} constructor directly, taking advantage of
	the new <a href="http://goo.gl/iz2Wi">"diamond" syntax</a>.
	
	<p>Overall, this method is not very useful and will likely be deprecated in the future.
    """
    return (elements instanceof Collection)
        ? new HashSet<E>(Collections2.cast(elements))
        : newHashSet(elements.iterator());
  }
public static <E> HashSet<E> newHashSet(Iterable<? extends E> elements) {
    return (elements instanceof Collection)
        ? new HashSet<E>(Collections2.cast(elements))
        : newHashSet(elements.iterator());
  }
public static < E > HashSet < E > newHashSet ( Iterable < ? extends E > elements ) { return ( elements instanceof Collection ) ? new HashSet < E > ( Collections2 . cast ( elements ) ) : newHashSet ( elements . iterator ( ) ) ; }
Creates a <i>mutable</i> {@code HashSet} instance containing the given elements. A very thin
convenience for creating an empty set then calling {@link Collection#addAll} or {@link
Iterables#addAll}.

<p><b>Note:</b> if mutability is not required and the elements are non-null, use {@link
ImmutableSet#copyOf(Iterable)} instead. (Or, change {@code elements} to be a {@link
FluentIterable} and call {@code elements.toSet()}.)

<p><b>Note:</b> if {@code E} is an {@link Enum} type, use {@link #newEnumSet(Iterable, Class)}
instead.

<p><b>Note for Java 7 and later:</b> if {@code elements} is a {@link Collection}, you don't
need this method. Instead, use the {@code HashSet} constructor directly, taking advantage of
the new <a href="http://goo.gl/iz2Wi">"diamond" syntax</a>.

<p>Overall, this method is not very useful and will likely be deprecated in the future.
Creates a <i > mutable< / i > { @code HashSet } instance containing the given elements . A very thin convenience for creating an empty set then calling { @link Collection#addAll } or { @link Iterables#addAll } .