offsetUnset($option) Not supported. Parameters

Op

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

offsetSet($option, $value) Not supported.

array resolve(array $options = array()) Merges options with the default values stored in the

interface Options implements ArrayAccess,

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

int count() Returns the number of set options. This may be only a subset of the defined

Op

OptionsResolver addAllowedTypes(string