First prototype
diff --git a/vendor/google/protobuf/src/Google/Protobuf/Api.php b/vendor/google/protobuf/src/Google/Protobuf/Api.php
new file mode 100644
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+++ b/vendor/google/protobuf/src/Google/Protobuf/Api.php
@@ -0,0 +1,350 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: google/protobuf/api.proto
+
+namespace Google\Protobuf;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ * Api is a light-weight descriptor for an API Interface.
+ * Interfaces are also described as "protocol buffer services" in some contexts,
+ * such as by the "service" keyword in a .proto file, but they are different
+ * from API Services, which represent a concrete implementation of an interface
+ * as opposed to simply a description of methods and bindings. They are also
+ * sometimes simply referred to as "APIs" in other contexts, such as the name of
+ * this message itself. See https://cloud.google.com/apis/design/glossary for
+ * detailed terminology.
+ *
+ * Generated from protobuf message <code>google.protobuf.Api</code>
+ */
+class Api extends \Google\Protobuf\Internal\Message
+{
+    /**
+     * The fully qualified name of this interface, including package name
+     * followed by the interface's simple name.
+     *
+     * Generated from protobuf field <code>string name = 1;</code>
+     */
+    private $name = '';
+    /**
+     * The methods of this interface, in unspecified order.
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Method methods = 2;</code>
+     */
+    private $methods;
+    /**
+     * Any metadata attached to the interface.
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Option options = 3;</code>
+     */
+    private $options;
+    /**
+     * A version string for this interface. If specified, must have the form
+     * `major-version.minor-version`, as in `1.10`. If the minor version is
+     * omitted, it defaults to zero. If the entire version field is empty, the
+     * major version is derived from the package name, as outlined below. If the
+     * field is not empty, the version in the package name will be verified to be
+     * consistent with what is provided here.
+     * The versioning schema uses [semantic
+     * versioning](http://semver.org) where the major version number
+     * indicates a breaking change and the minor version an additive,
+     * non-breaking change. Both version numbers are signals to users
+     * what to expect from different versions, and should be carefully
+     * chosen based on the product plan.
+     * The major version is also reflected in the package name of the
+     * interface, which must end in `v<major-version>`, as in
+     * `google.feature.v1`. For major versions 0 and 1, the suffix can
+     * be omitted. Zero major versions must only be used for
+     * experimental, non-GA interfaces.
+     *
+     * Generated from protobuf field <code>string version = 4;</code>
+     */
+    private $version = '';
+    /**
+     * Source context for the protocol buffer service represented by this
+     * message.
+     *
+     * Generated from protobuf field <code>.google.protobuf.SourceContext source_context = 5;</code>
+     */
+    private $source_context = null;
+    /**
+     * Included interfaces. See [Mixin][].
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Mixin mixins = 6;</code>
+     */
+    private $mixins;
+    /**
+     * The source syntax of the service.
+     *
+     * Generated from protobuf field <code>.google.protobuf.Syntax syntax = 7;</code>
+     */
+    private $syntax = 0;
+
+    /**
+     * Constructor.
+     *
+     * @param array $data {
+     *     Optional. Data for populating the Message object.
+     *
+     *     @type string $name
+     *           The fully qualified name of this interface, including package name
+     *           followed by the interface's simple name.
+     *     @type \Google\Protobuf\Method[]|\Google\Protobuf\Internal\RepeatedField $methods
+     *           The methods of this interface, in unspecified order.
+     *     @type \Google\Protobuf\Option[]|\Google\Protobuf\Internal\RepeatedField $options
+     *           Any metadata attached to the interface.
+     *     @type string $version
+     *           A version string for this interface. If specified, must have the form
+     *           `major-version.minor-version`, as in `1.10`. If the minor version is
+     *           omitted, it defaults to zero. If the entire version field is empty, the
+     *           major version is derived from the package name, as outlined below. If the
+     *           field is not empty, the version in the package name will be verified to be
+     *           consistent with what is provided here.
+     *           The versioning schema uses [semantic
+     *           versioning](http://semver.org) where the major version number
+     *           indicates a breaking change and the minor version an additive,
+     *           non-breaking change. Both version numbers are signals to users
+     *           what to expect from different versions, and should be carefully
+     *           chosen based on the product plan.
+     *           The major version is also reflected in the package name of the
+     *           interface, which must end in `v<major-version>`, as in
+     *           `google.feature.v1`. For major versions 0 and 1, the suffix can
+     *           be omitted. Zero major versions must only be used for
+     *           experimental, non-GA interfaces.
+     *     @type \Google\Protobuf\SourceContext $source_context
+     *           Source context for the protocol buffer service represented by this
+     *           message.
+     *     @type \Google\Protobuf\Mixin[]|\Google\Protobuf\Internal\RepeatedField $mixins
+     *           Included interfaces. See [Mixin][].
+     *     @type int $syntax
+     *           The source syntax of the service.
+     * }
+     */
+    public function __construct($data = NULL) {
+        \GPBMetadata\Google\Protobuf\Api::initOnce();
+        parent::__construct($data);
+    }
+
+    /**
+     * The fully qualified name of this interface, including package name
+     * followed by the interface's simple name.
+     *
+     * Generated from protobuf field <code>string name = 1;</code>
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * The fully qualified name of this interface, including package name
+     * followed by the interface's simple name.
+     *
+     * Generated from protobuf field <code>string name = 1;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setName($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->name = $var;
+
+        return $this;
+    }
+
+    /**
+     * The methods of this interface, in unspecified order.
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Method methods = 2;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getMethods()
+    {
+        return $this->methods;
+    }
+
+    /**
+     * The methods of this interface, in unspecified order.
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Method methods = 2;</code>
+     * @param \Google\Protobuf\Method[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setMethods($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Method::class);
+        $this->methods = $arr;
+
+        return $this;
+    }
+
+    /**
+     * Any metadata attached to the interface.
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Option options = 3;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getOptions()
+    {
+        return $this->options;
+    }
+
+    /**
+     * Any metadata attached to the interface.
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Option options = 3;</code>
+     * @param \Google\Protobuf\Option[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setOptions($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Option::class);
+        $this->options = $arr;
+
+        return $this;
+    }
+
+    /**
+     * A version string for this interface. If specified, must have the form
+     * `major-version.minor-version`, as in `1.10`. If the minor version is
+     * omitted, it defaults to zero. If the entire version field is empty, the
+     * major version is derived from the package name, as outlined below. If the
+     * field is not empty, the version in the package name will be verified to be
+     * consistent with what is provided here.
+     * The versioning schema uses [semantic
+     * versioning](http://semver.org) where the major version number
+     * indicates a breaking change and the minor version an additive,
+     * non-breaking change. Both version numbers are signals to users
+     * what to expect from different versions, and should be carefully
+     * chosen based on the product plan.
+     * The major version is also reflected in the package name of the
+     * interface, which must end in `v<major-version>`, as in
+     * `google.feature.v1`. For major versions 0 and 1, the suffix can
+     * be omitted. Zero major versions must only be used for
+     * experimental, non-GA interfaces.
+     *
+     * Generated from protobuf field <code>string version = 4;</code>
+     * @return string
+     */
+    public function getVersion()
+    {
+        return $this->version;
+    }
+
+    /**
+     * A version string for this interface. If specified, must have the form
+     * `major-version.minor-version`, as in `1.10`. If the minor version is
+     * omitted, it defaults to zero. If the entire version field is empty, the
+     * major version is derived from the package name, as outlined below. If the
+     * field is not empty, the version in the package name will be verified to be
+     * consistent with what is provided here.
+     * The versioning schema uses [semantic
+     * versioning](http://semver.org) where the major version number
+     * indicates a breaking change and the minor version an additive,
+     * non-breaking change. Both version numbers are signals to users
+     * what to expect from different versions, and should be carefully
+     * chosen based on the product plan.
+     * The major version is also reflected in the package name of the
+     * interface, which must end in `v<major-version>`, as in
+     * `google.feature.v1`. For major versions 0 and 1, the suffix can
+     * be omitted. Zero major versions must only be used for
+     * experimental, non-GA interfaces.
+     *
+     * Generated from protobuf field <code>string version = 4;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setVersion($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->version = $var;
+
+        return $this;
+    }
+
+    /**
+     * Source context for the protocol buffer service represented by this
+     * message.
+     *
+     * Generated from protobuf field <code>.google.protobuf.SourceContext source_context = 5;</code>
+     * @return \Google\Protobuf\SourceContext
+     */
+    public function getSourceContext()
+    {
+        return $this->source_context;
+    }
+
+    /**
+     * Source context for the protocol buffer service represented by this
+     * message.
+     *
+     * Generated from protobuf field <code>.google.protobuf.SourceContext source_context = 5;</code>
+     * @param \Google\Protobuf\SourceContext $var
+     * @return $this
+     */
+    public function setSourceContext($var)
+    {
+        GPBUtil::checkMessage($var, \Google\Protobuf\SourceContext::class);
+        $this->source_context = $var;
+
+        return $this;
+    }
+
+    /**
+     * Included interfaces. See [Mixin][].
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Mixin mixins = 6;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getMixins()
+    {
+        return $this->mixins;
+    }
+
+    /**
+     * Included interfaces. See [Mixin][].
+     *
+     * Generated from protobuf field <code>repeated .google.protobuf.Mixin mixins = 6;</code>
+     * @param \Google\Protobuf\Mixin[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setMixins($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Mixin::class);
+        $this->mixins = $arr;
+
+        return $this;
+    }
+
+    /**
+     * The source syntax of the service.
+     *
+     * Generated from protobuf field <code>.google.protobuf.Syntax syntax = 7;</code>
+     * @return int
+     */
+    public function getSyntax()
+    {
+        return $this->syntax;
+    }
+
+    /**
+     * The source syntax of the service.
+     *
+     * Generated from protobuf field <code>.google.protobuf.Syntax syntax = 7;</code>
+     * @param int $var
+     * @return $this
+     */
+    public function setSyntax($var)
+    {
+        GPBUtil::checkEnum($var, \Google\Protobuf\Syntax::class);
+        $this->syntax = $var;
+
+        return $this;
+    }
+
+}
+