AbstractValidator.php

    /**
     * Sets one or multiple options
     *
     * @param  array|Traversable $options Options to set
     * @throws Exception\InvalidArgumentException If $options is not an array or Traversable
     * @return AbstractValidator Provides fluid interface
     */
    public function setOptions($options = array())
    {
        if (!is_array($options) && !$options instanceof Traversable) {
            throw new Exception\InvalidArgumentException(__METHOD__ . ' expects an array or Traversable');
        }

        foreach ($options as $name => $option) {
            $fname = 'set' . ucfirst($name);
            $fname2 = 'is' . ucfirst($name);
            if (($name != 'setOptions') && method_exists($this, $name)) {
                $this->{$name}($option);
            } elseif (($fname != 'setOptions') && method_exists($this, $fname)) {
                $this->{$fname}($option);
            } elseif (($fname2 != 'setOptions') && method_exists($this, $fname2)) {
                $this->{$fname2}($option);
            } elseif (isset($this->options)) {
                $this->options[$name] = $option;
            } else {
                $this->abstractOptions[$name] = $options;
            }
        }

        return $this;
    }