Date_I18n_Immutable::createFromMutable( $datetime )
Source
File: src/Tribe/Utils/Date_I18n_Immutable.php
public static function createFromMutable( $datetime ) {
$date_object = new self;
$date_object = $date_object->setTimestamp( $datetime->getTimestamp() );
$date_object = $date_object->setTimezone( $datetime->getTimezone() );
return $date_object;
}