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

Op

OptionsResolver setAllowedValues(string

Op

offsetUnset($option) Not supported. Parameters

OptionsResolver setDefined(string|string[]

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

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

OptionsResolver setAllowedTypes(string