API helper classes

src/Exception/Authorization/MissingBearer.php

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+<?php
+namespace ProVM\Exception\Authorization;
+
+use Throwable;
+use Exception;
+
+class MissingBearer extends Exception
+{
+    public function __construct(Throwable $previous = null)
+    {
+        parent::__construct('Missing Bearer token', 401, $previous);
+    }
+}

src/Exception/Authorization/MissingHeader.php

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+<?php
+namespace ProVM\Exception\Authorization;
+
+use Throwable;
+use Exception;
+
+class MissingHeader extends Exception
+{
+    public function __construct(Throwable $previous = null)
+    {
+        parent::__construct('No Authorization header found', 401, $previous);
+    }
+}

src/Exception/Authorization/MissingToken.php

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+<?php
+namespace ProVM\Exception\Authorization;
+
+use Throwable;
+use Exception;
+
+class MissingToken extends Exception
+{
+    public function __construct(string $placement, Throwable $previous)
+    {
+        parent::__construct("No token found in {$placement}", 401, $previous);
+    }
+}