string[] getDefinedOptions() Returns the names of all defined options.

bool isKnown(string $option) Returns whether an option is known. An option is known if

bool isRequired(string $option) Returns whether an option is required. An option is required

array resolve(array $options = array()) Returns the combination of the default and the passed

OptionsResolver setAllowedTypes(string

OptionsResolver setAllowedValues(string

Op

string[] getMissingOptions() Returns the names of all options missing a default value.

offsetUnset($option) Not supported. Parameters

string[] getRequiredOptions() Returns the names of all required options.