diff --git a/vendor/google/protobuf/src/Google/Protobuf/Internal/DescriptorProto.php b/vendor/google/protobuf/src/Google/Protobuf/Internal/DescriptorProto.php
new file mode 100644
index 0000000..7cc689d
--- /dev/null
+++ b/vendor/google/protobuf/src/Google/Protobuf/Internal/DescriptorProto.php
@@ -0,0 +1,386 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: google/protobuf/descriptor.proto
+
+namespace Google\Protobuf\Internal;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\GPBWire;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\InputStream;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ * Describes a message type.
+ *
+ * Generated from protobuf message <code>google.protobuf.DescriptorProto</code>
+ */
+class DescriptorProto extends \Google\Protobuf\Internal\Message
+{
+    /**
+     * Generated from protobuf field <code>optional string name = 1;</code>
+     */
+    protected $name = '';
+    private $has_name = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.FieldDescriptorProto field = 2;</code>
+     */
+    private $field;
+    private $has_field = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.FieldDescriptorProto extension = 6;</code>
+     */
+    private $extension;
+    private $has_extension = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto nested_type = 3;</code>
+     */
+    private $nested_type;
+    private $has_nested_type = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.EnumDescriptorProto enum_type = 4;</code>
+     */
+    private $enum_type;
+    private $has_enum_type = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto.ExtensionRange extension_range = 5;</code>
+     */
+    private $extension_range;
+    private $has_extension_range = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.OneofDescriptorProto oneof_decl = 8;</code>
+     */
+    private $oneof_decl;
+    private $has_oneof_decl = false;
+    /**
+     * Generated from protobuf field <code>optional .google.protobuf.MessageOptions options = 7;</code>
+     */
+    protected $options = null;
+    private $has_options = false;
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto.ReservedRange reserved_range = 9;</code>
+     */
+    private $reserved_range;
+    private $has_reserved_range = false;
+    /**
+     * Reserved field names, which may not be used by fields in the same message.
+     * A given name may only be reserved once.
+     *
+     * Generated from protobuf field <code>repeated string reserved_name = 10;</code>
+     */
+    private $reserved_name;
+    private $has_reserved_name = false;
+
+    /**
+     * Constructor.
+     *
+     * @param array $data {
+     *     Optional. Data for populating the Message object.
+     *
+     *     @type string $name
+     *     @type \Google\Protobuf\Internal\FieldDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $field
+     *     @type \Google\Protobuf\Internal\FieldDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $extension
+     *     @type \Google\Protobuf\Internal\DescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $nested_type
+     *     @type \Google\Protobuf\Internal\EnumDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $enum_type
+     *     @type \Google\Protobuf\Internal\DescriptorProto\ExtensionRange[]|\Google\Protobuf\Internal\RepeatedField $extension_range
+     *     @type \Google\Protobuf\Internal\OneofDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $oneof_decl
+     *     @type \Google\Protobuf\Internal\MessageOptions $options
+     *     @type \Google\Protobuf\Internal\DescriptorProto\ReservedRange[]|\Google\Protobuf\Internal\RepeatedField $reserved_range
+     *     @type string[]|\Google\Protobuf\Internal\RepeatedField $reserved_name
+     *           Reserved field names, which may not be used by fields in the same message.
+     *           A given name may only be reserved once.
+     * }
+     */
+    public function __construct($data = NULL) {
+        \GPBMetadata\Google\Protobuf\Internal\Descriptor::initOnce();
+        parent::__construct($data);
+    }
+
+    /**
+     * Generated from protobuf field <code>optional string name = 1;</code>
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Generated from protobuf field <code>optional string name = 1;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setName($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->name = $var;
+        $this->has_name = true;
+
+        return $this;
+    }
+
+    public function hasName()
+    {
+        return $this->has_name;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.FieldDescriptorProto field = 2;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getField()
+    {
+        return $this->field;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.FieldDescriptorProto field = 2;</code>
+     * @param \Google\Protobuf\Internal\FieldDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setField($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\FieldDescriptorProto::class);
+        $this->field = $arr;
+        $this->has_field = true;
+
+        return $this;
+    }
+
+    public function hasField()
+    {
+        return $this->has_field;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.FieldDescriptorProto extension = 6;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getExtension()
+    {
+        return $this->extension;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.FieldDescriptorProto extension = 6;</code>
+     * @param \Google\Protobuf\Internal\FieldDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setExtension($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\FieldDescriptorProto::class);
+        $this->extension = $arr;
+        $this->has_extension = true;
+
+        return $this;
+    }
+
+    public function hasExtension()
+    {
+        return $this->has_extension;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto nested_type = 3;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getNestedType()
+    {
+        return $this->nested_type;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto nested_type = 3;</code>
+     * @param \Google\Protobuf\Internal\DescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setNestedType($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\DescriptorProto::class);
+        $this->nested_type = $arr;
+        $this->has_nested_type = true;
+
+        return $this;
+    }
+
+    public function hasNestedType()
+    {
+        return $this->has_nested_type;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.EnumDescriptorProto enum_type = 4;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getEnumType()
+    {
+        return $this->enum_type;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.EnumDescriptorProto enum_type = 4;</code>
+     * @param \Google\Protobuf\Internal\EnumDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setEnumType($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\EnumDescriptorProto::class);
+        $this->enum_type = $arr;
+        $this->has_enum_type = true;
+
+        return $this;
+    }
+
+    public function hasEnumType()
+    {
+        return $this->has_enum_type;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto.ExtensionRange extension_range = 5;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getExtensionRange()
+    {
+        return $this->extension_range;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto.ExtensionRange extension_range = 5;</code>
+     * @param \Google\Protobuf\Internal\DescriptorProto\ExtensionRange[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setExtensionRange($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\DescriptorProto\ExtensionRange::class);
+        $this->extension_range = $arr;
+        $this->has_extension_range = true;
+
+        return $this;
+    }
+
+    public function hasExtensionRange()
+    {
+        return $this->has_extension_range;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.OneofDescriptorProto oneof_decl = 8;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getOneofDecl()
+    {
+        return $this->oneof_decl;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.OneofDescriptorProto oneof_decl = 8;</code>
+     * @param \Google\Protobuf\Internal\OneofDescriptorProto[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setOneofDecl($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\OneofDescriptorProto::class);
+        $this->oneof_decl = $arr;
+        $this->has_oneof_decl = true;
+
+        return $this;
+    }
+
+    public function hasOneofDecl()
+    {
+        return $this->has_oneof_decl;
+    }
+
+    /**
+     * Generated from protobuf field <code>optional .google.protobuf.MessageOptions options = 7;</code>
+     * @return \Google\Protobuf\Internal\MessageOptions
+     */
+    public function getOptions()
+    {
+        return $this->options;
+    }
+
+    /**
+     * Generated from protobuf field <code>optional .google.protobuf.MessageOptions options = 7;</code>
+     * @param \Google\Protobuf\Internal\MessageOptions $var
+     * @return $this
+     */
+    public function setOptions($var)
+    {
+        GPBUtil::checkMessage($var, \Google\Protobuf\Internal\MessageOptions::class);
+        $this->options = $var;
+        $this->has_options = true;
+
+        return $this;
+    }
+
+    public function hasOptions()
+    {
+        return $this->has_options;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto.ReservedRange reserved_range = 9;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getReservedRange()
+    {
+        return $this->reserved_range;
+    }
+
+    /**
+     * Generated from protobuf field <code>repeated .google.protobuf.DescriptorProto.ReservedRange reserved_range = 9;</code>
+     * @param \Google\Protobuf\Internal\DescriptorProto\ReservedRange[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setReservedRange($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Protobuf\Internal\DescriptorProto\ReservedRange::class);
+        $this->reserved_range = $arr;
+        $this->has_reserved_range = true;
+
+        return $this;
+    }
+
+    public function hasReservedRange()
+    {
+        return $this->has_reserved_range;
+    }
+
+    /**
+     * Reserved field names, which may not be used by fields in the same message.
+     * A given name may only be reserved once.
+     *
+     * Generated from protobuf field <code>repeated string reserved_name = 10;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getReservedName()
+    {
+        return $this->reserved_name;
+    }
+
+    /**
+     * Reserved field names, which may not be used by fields in the same message.
+     * A given name may only be reserved once.
+     *
+     * Generated from protobuf field <code>repeated string reserved_name = 10;</code>
+     * @param string[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setReservedName($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::STRING);
+        $this->reserved_name = $arr;
+        $this->has_reserved_name = true;
+
+        return $this;
+    }
+
+    public function hasReservedName()
+    {
+        return $this->has_reserved_name;
+    }
+
+}
+