public FormState::hasTemporaryValue($key)
Determines if a temporary value is present.
Parameters
string $key: Properties are often stored as multi-dimensional associative arrays. If $key is a string, it will return isset($temporary[$key]). If $key is an array, each element of the array will be used as a nested key. If $key = ['foo', 'bar'] it will return isset($temporary['foo']['bar']).
Overrides FormStateInterface::hasTemporaryValue
File
core/lib/Drupal/Core/Form/FormState.php, line 803
Cl