FormExtensionInterface[] getExtensions()

string getMethod() Unsupported method.

RequestHandlerInterface getRequestHandler()

class DataCollectorExtension extends

configureOptions(OptionsResolver

bool isSynchronized() Returns whether the data in the different formats is synchronized.

bool getByReference() Returns whether the form's data should be modified by reference.

FormView createView(

FormConfigBuilderInterface

FormFactoryBuilderInterface