src/ParameterParser/ParameterCluster.php
public function add(ParameterClosure $closure)
    {
        $this->prefixes[$closure->prefix][$closure->parameterName] = $closure;

        return $this;
    }
public function add(ParameterClosure $closure)
    {
        $this->prefixes[$closure->prefix][$closure->parameterName] = $closure;

        return $this;
    }
Add a parameter closure.

@param ParameterClosure $closure

@return ParameterCluster