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diff --git a/vendor/symfony/options-resolver/Symfony/Component/OptionsResolver/README.md b/vendor/symfony/options-resolver/Symfony/Component/OptionsResolver/README.md
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-OptionsResolver Component
-=========================
-
-OptionsResolver helps at configuring objects with option arrays.
-
-It supports default values on different levels of your class hierarchy,
-option constraints (required vs. optional, allowed values) and lazy options
-whose default value depends on the value of another option.
-
-The following example demonstrates a Person class with two required options
-"firstName" and "lastName" and two optional options "age" and "gender", where
-the default value of "gender" is derived from the passed first name, if
-possible, and may only be one of "male" and "female".
-
-    use Symfony\Component\OptionsResolver\OptionsResolver;
-    use Symfony\Component\OptionsResolver\OptionsResolverInterface;
-    use Symfony\Component\OptionsResolver\Options;
-
-    class Person
-    {
-        protected $options;
-
-        public function __construct(array $options = array())
-        {
-            $resolver = new OptionsResolver();
-            $this->setDefaultOptions($resolver);
-
-            $this->options = $resolver->resolve($options);
-        }
-
-        protected function setDefaultOptions(OptionsResolverInterface $resolver)
-        {
-            $resolver->setRequired(array(
-                'firstName',
-                'lastName',
-            ));
-
-            $resolver->setDefaults(array(
-                'age' => null,
-                'gender' => function (Options $options) {
-                    if (self::isKnownMaleName($options['firstName'])) {
-                        return 'male';
-                    }
-
-                    return 'female';
-                },
-            ));
-
-            $resolver->setAllowedValues(array(
-                'gender' => array('male', 'female'),
-            ));
-        }
-    }
-
-We can now easily instantiate a Person object:
-
-    // 'gender' is implicitly set to 'female'
-    $person = new Person(array(
-        'firstName' => 'Jane',
-        'lastName' => 'Doe',
-    ));
-
-We can also override the default values of the optional options:
-
-    $person = new Person(array(
-        'firstName' => 'Abdullah',
-        'lastName' => 'Mogashi',
-        'gender' => 'male',
-        'age' => 30,
-    ));
-
-Options can be added or changed in subclasses by overriding the `setDefaultOptions`
-method:
-
-    use Symfony\Component\OptionsResolver\OptionsResolver;
-    use Symfony\Component\OptionsResolver\Options;
-
-    class Employee extends Person
-    {
-        protected function setDefaultOptions(OptionsResolverInterface $resolver)
-        {
-            parent::setDefaultOptions($resolver);
-
-            $resolver->setRequired(array(
-                'birthDate',
-            ));
-
-            $resolver->setDefaults(array(
-                // $previousValue contains the default value configured in the
-                // parent class
-                'age' => function (Options $options, $previousValue) {
-                    return self::calculateAge($options['birthDate']);
-                }
-            ));
-        }
-    }
-
-
-
-Resources
----------
-
-You can run the unit tests with the following command:
-
-    $ cd path/to/Symfony/Component/OptionsResolver/
-    $ composer.phar install --dev
-    $ phpunit