38             $value = $this->getValue();
43             return $this->toPersistentDateTimeUtility($value);
51      * @param DateTime|null $value
54     public function setValue($value): Metadata  argument
56         if ($value === null) {
60         if (!($value instanceof DateTime)) {
61 …    throw new ExceptionRuntime("The value is not a date time. Value: " . var_export($value, true));
63         $this->dateTimeValue = $value;
70     public function setFromStoreValue($value): Metadata  argument
72         return $this->setValue($this->fromPersistentDateTimeUtility($value));
102         $value = $this->getReadStore()->get($this);
104             $this->dateTimeValue = $this->fromPersistentDateTimeUtility($value);
115     protected function fromPersistentDateTimeUtility($value)  argument
117         if ($value === null || $value === "") {
120         if (!is_string($value)) {
123         return Iso8601Date::createFromString($value)->getDateTime();
142     private function toPersistentDateTimeUtility($value): string  argument
144         if ($value === null) {
147         if (!($value instanceof DateTime)) {
150         return Iso8601Date::createFromDateTime($value)->toString();
163     public function setFromStoreValueWithoutException($value): Metadata  argument
166             $this->dateTimeValue = $this->fromPersistentDateTimeUtility($value);