bool isClicked() Returns whether this element was clicked.
mapDataToForms(mixed $data, FormInterface[] $forms)
class ButtonBuilder implements IteratorAggregate,
int count() Returns the number of form children (implements the \Countable interface).
interface FormTypeExtensionInterface Methods
bool hasChildren() Returns whether the current element of the iterator can be recursed into.
mixed getAttribute(string $name, mixed $default = null) Returns the value of the given attribute
EventDispatcherInterface
FormInterface add(
FormInterface submit(null|string|array $submittedData
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