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diff --git a/vendor/phpspec/prophecy/src/Prophecy/Doubler/Generator/TypeHintReference.php b/vendor/phpspec/prophecy/src/Prophecy/Doubler/Generator/TypeHintReference.php
new file mode 100644
index 000000000..ce952029b
--- /dev/null
+++ b/vendor/phpspec/prophecy/src/Prophecy/Doubler/Generator/TypeHintReference.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Prophecy\Doubler\Generator;
+
+/**
+ * Tells whether a keyword refers to a class or to a built-in type for the
+ * current version of php
+ */
+final class TypeHintReference
+{
+    public function isBuiltInParamTypeHint($type)
+    {
+        switch ($type) {
+            case 'self':
+            case 'array':
+                return true;
+
+            case 'callable':
+                return PHP_VERSION_ID >= 50400;
+
+            case 'bool':
+            case 'float':
+            case 'int':
+            case 'string':
+                return PHP_VERSION_ID >= 70000;
+
+            case 'iterable':
+                return PHP_VERSION_ID >= 70100;
+
+            case 'object':
+                return PHP_VERSION_ID >= 70200;
+
+            default:
+                return false;
+        }
+    }
+
+    public function isBuiltInReturnTypeHint($type)
+    {
+        if ($type === 'void') {
+            return PHP_VERSION_ID >= 70100;
+        }
+
+        return $this->isBuiltInParamTypeHint($type);
+    }
+}