public FormSubmitterInterface::executeSubmitHandlers(&$form, FormStateInterface &$form_state)
Executes custom submission handlers for a given form.
Button-specific handlers are checked first. If none exist, the function falls back to form-level handlers.
$form: An associative array containing the structure of the form.
$form_state: The current state of the form. If the user submitted the form by clicking a button with custom handler functions defined, those handlers will be stored here.
public function executeSubmitHandlers(&$form, FormStateInterface &$form_state);
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