First prototype
diff --git a/inc/Gtfs/FareAttribute.php b/inc/Gtfs/FareAttribute.php
new file mode 100644
index 0000000..81e62ec
--- /dev/null
+++ b/inc/Gtfs/FareAttribute.php
@@ -0,0 +1,235 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: proto/gtfs.proto
+
+namespace Gtfs;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ * Generated from protobuf message <code>gtfs.FareAttribute</code>
+ */
+class FareAttribute extends \Google\Protobuf\Internal\Message
+{
+    /**
+     * Generated from protobuf field <code>string fare_id = 1;</code>
+     */
+    protected $fare_id = '';
+    /**
+     * Generated from protobuf field <code>float price = 2;</code>
+     */
+    protected $price = 0.0;
+    /**
+     * Generated from protobuf field <code>string currency_type = 3;</code>
+     */
+    protected $currency_type = '';
+    /**
+     * Generated from protobuf field <code>.gtfs.FareAttribute.PaymentMethod payment_method = 4;</code>
+     */
+    protected $payment_method = 0;
+    /**
+     * Generated from protobuf field <code>.gtfs.FareAttribute.Transfers transfers = 5;</code>
+     */
+    protected $transfers = 0;
+    /**
+     * Generated from protobuf field <code>int32 transfer_duration = 6;</code>
+     */
+    protected $transfer_duration = 0;
+    /**
+     * The extensions namespace allows 3rd-party developers to extend the
+     * GTFS specification in order to add and evaluate new features and
+     * modifications to the spec.
+     *
+     * Generated from protobuf field <code>.google.protobuf.Any extension = 2000;</code>
+     */
+    protected $extension = null;
+
+    /**
+     * Constructor.
+     *
+     * @param array $data {
+     *     Optional. Data for populating the Message object.
+     *
+     *     @type string $fare_id
+     *     @type float $price
+     *     @type string $currency_type
+     *     @type int $payment_method
+     *     @type int $transfers
+     *     @type int $transfer_duration
+     *     @type \Google\Protobuf\Any $extension
+     *           The extensions namespace allows 3rd-party developers to extend the
+     *           GTFS specification in order to add and evaluate new features and
+     *           modifications to the spec.
+     * }
+     */
+    public function __construct($data = NULL) {
+        \GPBMetadata\Proto\Gtfs::initOnce();
+        parent::__construct($data);
+    }
+
+    /**
+     * Generated from protobuf field <code>string fare_id = 1;</code>
+     * @return string
+     */
+    public function getFareId()
+    {
+        return $this->fare_id;
+    }
+
+    /**
+     * Generated from protobuf field <code>string fare_id = 1;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setFareId($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->fare_id = $var;
+
+        return $this;
+    }
+
+    /**
+     * Generated from protobuf field <code>float price = 2;</code>
+     * @return float
+     */
+    public function getPrice()
+    {
+        return $this->price;
+    }
+
+    /**
+     * Generated from protobuf field <code>float price = 2;</code>
+     * @param float $var
+     * @return $this
+     */
+    public function setPrice($var)
+    {
+        GPBUtil::checkFloat($var);
+        $this->price = $var;
+
+        return $this;
+    }
+
+    /**
+     * Generated from protobuf field <code>string currency_type = 3;</code>
+     * @return string
+     */
+    public function getCurrencyType()
+    {
+        return $this->currency_type;
+    }
+
+    /**
+     * Generated from protobuf field <code>string currency_type = 3;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setCurrencyType($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->currency_type = $var;
+
+        return $this;
+    }
+
+    /**
+     * Generated from protobuf field <code>.gtfs.FareAttribute.PaymentMethod payment_method = 4;</code>
+     * @return int
+     */
+    public function getPaymentMethod()
+    {
+        return $this->payment_method;
+    }
+
+    /**
+     * Generated from protobuf field <code>.gtfs.FareAttribute.PaymentMethod payment_method = 4;</code>
+     * @param int $var
+     * @return $this
+     */
+    public function setPaymentMethod($var)
+    {
+        GPBUtil::checkEnum($var, \Gtfs\FareAttribute_PaymentMethod::class);
+        $this->payment_method = $var;
+
+        return $this;
+    }
+
+    /**
+     * Generated from protobuf field <code>.gtfs.FareAttribute.Transfers transfers = 5;</code>
+     * @return int
+     */
+    public function getTransfers()
+    {
+        return $this->transfers;
+    }
+
+    /**
+     * Generated from protobuf field <code>.gtfs.FareAttribute.Transfers transfers = 5;</code>
+     * @param int $var
+     * @return $this
+     */
+    public function setTransfers($var)
+    {
+        GPBUtil::checkEnum($var, \Gtfs\FareAttribute_Transfers::class);
+        $this->transfers = $var;
+
+        return $this;
+    }
+
+    /**
+     * Generated from protobuf field <code>int32 transfer_duration = 6;</code>
+     * @return int
+     */
+    public function getTransferDuration()
+    {
+        return $this->transfer_duration;
+    }
+
+    /**
+     * Generated from protobuf field <code>int32 transfer_duration = 6;</code>
+     * @param int $var
+     * @return $this
+     */
+    public function setTransferDuration($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->transfer_duration = $var;
+
+        return $this;
+    }
+
+    /**
+     * The extensions namespace allows 3rd-party developers to extend the
+     * GTFS specification in order to add and evaluate new features and
+     * modifications to the spec.
+     *
+     * Generated from protobuf field <code>.google.protobuf.Any extension = 2000;</code>
+     * @return \Google\Protobuf\Any
+     */
+    public function getExtension()
+    {
+        return $this->extension;
+    }
+
+    /**
+     * The extensions namespace allows 3rd-party developers to extend the
+     * GTFS specification in order to add and evaluate new features and
+     * modifications to the spec.
+     *
+     * Generated from protobuf field <code>.google.protobuf.Any extension = 2000;</code>
+     * @param \Google\Protobuf\Any $var
+     * @return $this
+     */
+    public function setExtension($var)
+    {
+        GPBUtil::checkMessage($var, \Google\Protobuf\Any::class);
+        $this->extension = $var;
+
+        return $this;
+    }
+
+}
+