commons/http/src/main/java/org/ldp4j/http/Languages.java
public static Language of(final Locale locale) {
		requireNonNull(locale,"Locale cannot be null");
		checkArgument(locale.getVariant().isEmpty(),"Language does not allow locale variants (%s)",locale.getVariant());
		return new ImmutableLanguage(locale);
	}
public static Language of(final Locale locale) {
		requireNonNull(locale,"Locale cannot be null");
		checkArgument(locale.getVariant().isEmpty(),"Language does not allow locale variants (%s)",locale.getVariant());
		return new ImmutableLanguage(locale);
	}
Create a {@code Language} for a given {@code Locale}.

@param locale
the {@code Locale} for the {@code Language}
@return a {@code Language} instance with the specified {@code Locale}
@throws NullPointerException
if {@code locale} is {@code null}
@throws IllegalArgumentException
if the provided locale is a variant (i.e.,
{@link Locale#getVariant()} is not empty)