23 files changed, 658 insertions, 0 deletions

diff --git a/vendor/stripe/stripe-php/lib/Exception/ApiConnectionException.php b/vendor/stripe/stripe-php/lib/Exception/ApiConnectionException.php
new file mode 100644
index 0000000..33f2ede
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/ApiConnectionException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * ApiConnection is thrown in the event that the SDK can't connect to Stripe's
+ * servers. That can be for a variety of different reasons from a downed
+ * network to a bad TLS certificate.
+ */
+class ApiConnectionException extends ApiErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/ApiErrorException.php b/vendor/stripe/stripe-php/lib/Exception/ApiErrorException.php
new file mode 100644
index 0000000..995a42e
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/ApiErrorException.php
@@ -0,0 +1,219 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * Implements properties and methods common to all (non-SPL) Stripe exceptions.
+ */
+abstract class ApiErrorException extends \Exception implements ExceptionInterface
+{
+    protected $error;
+    protected $httpBody;
+    protected $httpHeaders;
+    protected $httpStatus;
+    protected $jsonBody;
+    protected $requestId;
+    protected $stripeCode;
+
+    /**
+     * Creates a new API error exception.
+     *
+     * @param string $message the exception message
+     * @param null|int $httpStatus the HTTP status code
+     * @param null|string $httpBody the HTTP body as a string
+     * @param null|array $jsonBody the JSON deserialized body
+     * @param null|array|\Stripe\Util\CaseInsensitiveArray $httpHeaders the HTTP headers array
+     * @param null|string $stripeCode the Stripe error code
+     *
+     * @return static
+     */
+    public static function factory(
+        $message,
+        $httpStatus = null,
+        $httpBody = null,
+        $jsonBody = null,
+        $httpHeaders = null,
+        $stripeCode = null
+    ) {
+        $instance = new static($message);
+        $instance->setHttpStatus($httpStatus);
+        $instance->setHttpBody($httpBody);
+        $instance->setJsonBody($jsonBody);
+        $instance->setHttpHeaders($httpHeaders);
+        $instance->setStripeCode($stripeCode);
+
+        $instance->setRequestId(null);
+        if ($httpHeaders && isset($httpHeaders['Request-Id'])) {
+            $instance->setRequestId($httpHeaders['Request-Id']);
+        }
+
+        $instance->setError($instance->constructErrorObject());
+
+        return $instance;
+    }
+
+    /**
+     * Gets the Stripe error object.
+     *
+     * @return null|\Stripe\ErrorObject
+     */
+    public function getError()
+    {
+        return $this->error;
+    }
+
+    /**
+     * Sets the Stripe error object.
+     *
+     * @param null|\Stripe\ErrorObject $error
+     */
+    public function setError($error)
+    {
+        $this->error = $error;
+    }
+
+    /**
+     * Gets the HTTP body as a string.
+     *
+     * @return null|string
+     */
+    public function getHttpBody()
+    {
+        return $this->httpBody;
+    }
+
+    /**
+     * Sets the HTTP body as a string.
+     *
+     * @param null|string $httpBody
+     */
+    public function setHttpBody($httpBody)
+    {
+        $this->httpBody = $httpBody;
+    }
+
+    /**
+     * Gets the HTTP headers array.
+     *
+     * @return null|array|\Stripe\Util\CaseInsensitiveArray
+     */
+    public function getHttpHeaders()
+    {
+        return $this->httpHeaders;
+    }
+
+    /**
+     * Sets the HTTP headers array.
+     *
+     * @param null|array|\Stripe\Util\CaseInsensitiveArray $httpHeaders
+     */
+    public function setHttpHeaders($httpHeaders)
+    {
+        $this->httpHeaders = $httpHeaders;
+    }
+
+    /**
+     * Gets the HTTP status code.
+     *
+     * @return null|int
+     */
+    public function getHttpStatus()
+    {
+        return $this->httpStatus;
+    }
+
+    /**
+     * Sets the HTTP status code.
+     *
+     * @param null|int $httpStatus
+     */
+    public function setHttpStatus($httpStatus)
+    {
+        $this->httpStatus = $httpStatus;
+    }
+
+    /**
+     * Gets the JSON deserialized body.
+     *
+     * @return null|array<string, mixed>
+     */
+    public function getJsonBody()
+    {
+        return $this->jsonBody;
+    }
+
+    /**
+     * Sets the JSON deserialized body.
+     *
+     * @param null|array<string, mixed> $jsonBody
+     */
+    public function setJsonBody($jsonBody)
+    {
+        $this->jsonBody = $jsonBody;
+    }
+
+    /**
+     * Gets the Stripe request ID.
+     *
+     * @return null|string
+     */
+    public function getRequestId()
+    {
+        return $this->requestId;
+    }
+
+    /**
+     * Sets the Stripe request ID.
+     *
+     * @param null|string $requestId
+     */
+    public function setRequestId($requestId)
+    {
+        $this->requestId = $requestId;
+    }
+
+    /**
+     * Gets the Stripe error code.
+     *
+     * Cf. the `CODE_*` constants on {@see \Stripe\ErrorObject} for possible
+     * values.
+     *
+     * @return null|string
+     */
+    public function getStripeCode()
+    {
+        return $this->stripeCode;
+    }
+
+    /**
+     * Sets the Stripe error code.
+     *
+     * @param null|string $stripeCode
+     */
+    public function setStripeCode($stripeCode)
+    {
+        $this->stripeCode = $stripeCode;
+    }
+
+    /**
+     * Returns the string representation of the exception.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        $statusStr = (null === $this->getHttpStatus()) ? '' : "(Status {$this->getHttpStatus()}) ";
+        $idStr = (null === $this->getRequestId()) ? '' : "(Request {$this->getRequestId()}) ";
+
+        return "{$statusStr}{$idStr}{$this->getMessage()}";
+    }
+
+    protected function constructErrorObject()
+    {
+        if (null === $this->jsonBody || !\array_key_exists('error', $this->jsonBody)) {
+            return null;
+        }
+
+        return \Stripe\ErrorObject::constructFrom($this->jsonBody['error']);
+    }
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/AuthenticationException.php b/vendor/stripe/stripe-php/lib/Exception/AuthenticationException.php
new file mode 100644
index 0000000..9e5c718
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/AuthenticationException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * AuthenticationException is thrown when invalid credentials are used to
+ * connect to Stripe's servers.
+ */
+class AuthenticationException extends ApiErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/BadMethodCallException.php b/vendor/stripe/stripe-php/lib/Exception/BadMethodCallException.php
new file mode 100644
index 0000000..96bdf66
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/BadMethodCallException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Stripe\Exception;
+
+class BadMethodCallException extends \BadMethodCallException implements ExceptionInterface
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/CardException.php b/vendor/stripe/stripe-php/lib/Exception/CardException.php
new file mode 100644
index 0000000..43df9c7
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/CardException.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * CardException is thrown when a user enters a card that can't be charged for
+ * some reason.
+ */
+class CardException extends ApiErrorException
+{
+    protected $declineCode;
+    protected $stripeParam;
+
+    /**
+     * Creates a new CardException exception.
+     *
+     * @param string $message the exception message
+     * @param null|int $httpStatus the HTTP status code
+     * @param null|string $httpBody the HTTP body as a string
+     * @param null|array $jsonBody the JSON deserialized body
+     * @param null|array|\Stripe\Util\CaseInsensitiveArray $httpHeaders the HTTP headers array
+     * @param null|string $stripeCode the Stripe error code
+     * @param null|string $declineCode the decline code
+     * @param null|string $stripeParam the parameter related to the error
+     *
+     * @return CardException
+     */
+    public static function factory(
+        $message,
+        $httpStatus = null,
+        $httpBody = null,
+        $jsonBody = null,
+        $httpHeaders = null,
+        $stripeCode = null,
+        $declineCode = null,
+        $stripeParam = null
+    ) {
+        $instance = parent::factory($message, $httpStatus, $httpBody, $jsonBody, $httpHeaders, $stripeCode);
+        $instance->setDeclineCode($declineCode);
+        $instance->setStripeParam($stripeParam);
+
+        return $instance;
+    }
+
+    /**
+     * Gets the decline code.
+     *
+     * @return null|string
+     */
+    public function getDeclineCode()
+    {
+        return $this->declineCode;
+    }
+
+    /**
+     * Sets the decline code.
+     *
+     * @param null|string $declineCode
+     */
+    public function setDeclineCode($declineCode)
+    {
+        $this->declineCode = $declineCode;
+    }
+
+    /**
+     * Gets the parameter related to the error.
+     *
+     * @return null|string
+     */
+    public function getStripeParam()
+    {
+        return $this->stripeParam;
+    }
+
+    /**
+     * Sets the parameter related to the error.
+     *
+     * @param null|string $stripeParam
+     */
+    public function setStripeParam($stripeParam)
+    {
+        $this->stripeParam = $stripeParam;
+    }
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/ExceptionInterface.php b/vendor/stripe/stripe-php/lib/Exception/ExceptionInterface.php
new file mode 100644
index 0000000..c84f37d
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/ExceptionInterface.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace Stripe\Exception;
+
+// TODO: remove this check once we drop support for PHP 5
+if (\interface_exists(\Throwable::class, false)) {
+    /**
+     * The base interface for all Stripe exceptions.
+     */
+    interface ExceptionInterface extends \Throwable
+    {
+    }
+} else {
+    /**
+     * The base interface for all Stripe exceptions.
+     */
+    // phpcs:disable PSR1.Classes.ClassDeclaration.MultipleClasses
+    interface ExceptionInterface
+    {
+    }
+    // phpcs:enable
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/IdempotencyException.php b/vendor/stripe/stripe-php/lib/Exception/IdempotencyException.php
new file mode 100644
index 0000000..09dbf07
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/IdempotencyException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * IdempotencyException is thrown in cases where an idempotency key was used
+ * improperly.
+ */
+class IdempotencyException extends ApiErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/InvalidArgumentException.php b/vendor/stripe/stripe-php/lib/Exception/InvalidArgumentException.php
new file mode 100644
index 0000000..7aa3ca3
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/InvalidArgumentException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Stripe\Exception;
+
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/InvalidRequestException.php b/vendor/stripe/stripe-php/lib/Exception/InvalidRequestException.php
new file mode 100644
index 0000000..ed4f8d0
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/InvalidRequestException.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * InvalidRequestException is thrown when a request is initiated with invalid
+ * parameters.
+ */
+class InvalidRequestException extends ApiErrorException
+{
+    protected $stripeParam;
+
+    /**
+     * Creates a new InvalidRequestException exception.
+     *
+     * @param string $message the exception message
+     * @param null|int $httpStatus the HTTP status code
+     * @param null|string $httpBody the HTTP body as a string
+     * @param null|array $jsonBody the JSON deserialized body
+     * @param null|array|\Stripe\Util\CaseInsensitiveArray $httpHeaders the HTTP headers array
+     * @param null|string $stripeCode the Stripe error code
+     * @param null|string $stripeParam the parameter related to the error
+     *
+     * @return InvalidRequestException
+     */
+    public static function factory(
+        $message,
+        $httpStatus = null,
+        $httpBody = null,
+        $jsonBody = null,
+        $httpHeaders = null,
+        $stripeCode = null,
+        $stripeParam = null
+    ) {
+        $instance = parent::factory($message, $httpStatus, $httpBody, $jsonBody, $httpHeaders, $stripeCode);
+        $instance->setStripeParam($stripeParam);
+
+        return $instance;
+    }
+
+    /**
+     * Gets the parameter related to the error.
+     *
+     * @return null|string
+     */
+    public function getStripeParam()
+    {
+        return $this->stripeParam;
+    }
+
+    /**
+     * Sets the parameter related to the error.
+     *
+     * @param null|string $stripeParam
+     */
+    public function setStripeParam($stripeParam)
+    {
+        $this->stripeParam = $stripeParam;
+    }
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/ExceptionInterface.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/ExceptionInterface.php
new file mode 100644
index 0000000..dd42662
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/ExceptionInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * The base interface for all Stripe OAuth exceptions.
+ */
+interface ExceptionInterface extends \Stripe\Exception\ExceptionInterface
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidClientException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidClientException.php
new file mode 100644
index 0000000..1393451
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidClientException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * InvalidClientException is thrown when the client_id does not belong to you,
+ * the stripe_user_id does not exist or is not connected to your application,
+ * or the API key mode (live or test mode) does not match the client_id mode.
+ */
+class InvalidClientException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidGrantException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidGrantException.php
new file mode 100644
index 0000000..898b3a7
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidGrantException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * InvalidGrantException is thrown when a specified code doesn't exist, is
+ * expired, has been used, or doesn't belong to you; a refresh token doesn't
+ * exist, or doesn't belong to you; or if an API key's mode (live or test)
+ * doesn't match the mode of a code or refresh token.
+ */
+class InvalidGrantException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidRequestException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidRequestException.php
new file mode 100644
index 0000000..59dac7c
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidRequestException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * InvalidRequestException is thrown when a code, refresh token, or grant
+ * type parameter is not provided, but was required.
+ */
+class InvalidRequestException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidScopeException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidScopeException.php
new file mode 100644
index 0000000..091729d
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/InvalidScopeException.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * InvalidScopeException is thrown when an invalid scope parameter is provided.
+ */
+class InvalidScopeException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/OAuthErrorException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/OAuthErrorException.php
new file mode 100644
index 0000000..bded3c8
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/OAuthErrorException.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * Implements properties and methods common to all (non-SPL) Stripe OAuth
+ * exceptions.
+ */
+abstract class OAuthErrorException extends \Stripe\Exception\ApiErrorException
+{
+    protected function constructErrorObject()
+    {
+        if (null === $this->jsonBody) {
+            return null;
+        }
+
+        return \Stripe\OAuthErrorObject::constructFrom($this->jsonBody);
+    }
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/UnknownOAuthErrorException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/UnknownOAuthErrorException.php
new file mode 100644
index 0000000..c8dba29
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/UnknownOAuthErrorException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * UnknownApiErrorException is thrown when the client library receives an
+ * error from the OAuth API it doesn't know about. Receiving this error usually
+ * means that your client library is outdated and should be upgraded.
+ */
+class UnknownOAuthErrorException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/UnsupportedGrantTypeException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/UnsupportedGrantTypeException.php
new file mode 100644
index 0000000..418635d
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/UnsupportedGrantTypeException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * UnsupportedGrantTypeException is thrown when an unuspported grant type
+ * parameter is specified.
+ */
+class UnsupportedGrantTypeException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/OAuth/UnsupportedResponseTypeException.php b/vendor/stripe/stripe-php/lib/Exception/OAuth/UnsupportedResponseTypeException.php
new file mode 100644
index 0000000..26742a8
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/OAuth/UnsupportedResponseTypeException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Stripe\Exception\OAuth;
+
+/**
+ * UnsupportedResponseTypeException is thrown when an unsupported response type
+ * parameter is specified.
+ */
+class UnsupportedResponseTypeException extends OAuthErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/PermissionException.php b/vendor/stripe/stripe-php/lib/Exception/PermissionException.php
new file mode 100644
index 0000000..5cf5154
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/PermissionException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * PermissionException is thrown in cases where access was attempted on a
+ * resource that wasn't allowed.
+ */
+class PermissionException extends ApiErrorException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/RateLimitException.php b/vendor/stripe/stripe-php/lib/Exception/RateLimitException.php
new file mode 100644
index 0000000..f28f450
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/RateLimitException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * RateLimitException is thrown in cases where an account is putting too much
+ * load on Stripe's API servers (usually by performing too many requests).
+ * Please back off on request rate.
+ */
+class RateLimitException extends InvalidRequestException
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/SignatureVerificationException.php b/vendor/stripe/stripe-php/lib/Exception/SignatureVerificationException.php
new file mode 100644
index 0000000..b08534a
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/SignatureVerificationException.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * SignatureVerificationException is thrown when the signature verification for
+ * a webhook fails.
+ */
+class SignatureVerificationException extends \Exception implements ExceptionInterface
+{
+    protected $httpBody;
+    protected $sigHeader;
+
+    /**
+     * Creates a new SignatureVerificationException exception.
+     *
+     * @param string $message the exception message
+     * @param null|string $httpBody the HTTP body as a string
+     * @param null|string $sigHeader the `Stripe-Signature` HTTP header
+     *
+     * @return SignatureVerificationException
+     */
+    public static function factory(
+        $message,
+        $httpBody = null,
+        $sigHeader = null
+    ) {
+        $instance = new static($message);
+        $instance->setHttpBody($httpBody);
+        $instance->setSigHeader($sigHeader);
+
+        return $instance;
+    }
+
+    /**
+     * Gets the HTTP body as a string.
+     *
+     * @return null|string
+     */
+    public function getHttpBody()
+    {
+        return $this->httpBody;
+    }
+
+    /**
+     * Sets the HTTP body as a string.
+     *
+     * @param null|string $httpBody
+     */
+    public function setHttpBody($httpBody)
+    {
+        $this->httpBody = $httpBody;
+    }
+
+    /**
+     * Gets the `Stripe-Signature` HTTP header.
+     *
+     * @return null|string
+     */
+    public function getSigHeader()
+    {
+        return $this->sigHeader;
+    }
+
+    /**
+     * Sets the `Stripe-Signature` HTTP header.
+     *
+     * @param null|string $sigHeader
+     */
+    public function setSigHeader($sigHeader)
+    {
+        $this->sigHeader = $sigHeader;
+    }
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/UnexpectedValueException.php b/vendor/stripe/stripe-php/lib/Exception/UnexpectedValueException.php
new file mode 100644
index 0000000..0a629ed
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/UnexpectedValueException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Stripe\Exception;
+
+class UnexpectedValueException extends \UnexpectedValueException implements ExceptionInterface
+{
+}
diff --git a/vendor/stripe/stripe-php/lib/Exception/UnknownApiErrorException.php b/vendor/stripe/stripe-php/lib/Exception/UnknownApiErrorException.php
new file mode 100644
index 0000000..7873bf8
--- /dev/null
+++ b/vendor/stripe/stripe-php/lib/Exception/UnknownApiErrorException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Stripe\Exception;
+
+/**
+ * UnknownApiErrorException is thrown when the client library receives an
+ * error from the API it doesn't know about. Receiving this error usually
+ * means that your client library is outdated and should be upgraded.
+ */
+class UnknownApiErrorException extends ApiErrorException
+{
+}