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diff --git a/vendor/consolidation/robo/src/Task/Development/GenerateTask.php b/vendor/consolidation/robo/src/Task/Development/GenerateTask.php
new file mode 100644
index 000000000..9d7a698e9
--- /dev/null
+++ b/vendor/consolidation/robo/src/Task/Development/GenerateTask.php
@@ -0,0 +1,107 @@
+<?php
+namespace Robo\Task\Development;
+
+use Robo\Task\BaseTask;
+use Robo\Result;
+
+/**
+ * Generate a Robo Task that is a wrapper around an existing class.
+ *
+ * ``` php
+ * <?php
+ * $this->taskGenerateTask('Symfony\Component\Filesystem\Filesystem', 'FilesystemStack')
+ *   ->run();
+ * ```
+ */
+class GenerateTask extends BaseTask
+{
+    /**
+     * @var string
+     */
+    protected $className;
+
+    /**
+     * @var string
+     */
+    protected $wrapperClassName;
+
+    /**
+     * @param string $className
+     * @param string $wrapperClassName
+     */
+    public function __construct($className, $wrapperClassName = '')
+    {
+        $this->className = $className;
+        $this->wrapperClassName = $wrapperClassName;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function run()
+    {
+        $delegate = new \ReflectionClass($this->className);
+        $replacements = [];
+
+        $leadingCommentChars = " * ";
+        $methodDescriptions = [];
+        $methodImplementations = [];
+        $immediateMethods = [];
+        foreach ($delegate->getMethods(\ReflectionMethod::IS_PUBLIC) as $method) {
+            $methodName = $method->name;
+            $getter = preg_match('/^(get|has|is)/', $methodName);
+            $setter = preg_match('/^(set|unset)/', $methodName);
+            $argPrototypeList = [];
+            $argNameList = [];
+            $needsImplementation = false;
+            foreach ($method->getParameters() as $arg) {
+                $argDescription = '$' . $arg->name;
+                $argNameList[] = $argDescription;
+                if ($arg->isOptional()) {
+                    $argDescription = $argDescription . ' = ' . str_replace("\n", "", var_export($arg->getDefaultValue(), true));
+                    // We will create wrapper methods for any method that
+                    // has default parameters.
+                    $needsImplementation = true;
+                }
+                $argPrototypeList[] = $argDescription;
+            }
+            $argPrototypeString = implode(', ', $argPrototypeList);
+            $argNameListString = implode(', ', $argNameList);
+
+            if ($methodName[0] != '_') {
+                $methodDescriptions[] = "@method $methodName($argPrototypeString)";
+
+                if ($getter) {
+                    $immediateMethods[] = "    public function $methodName($argPrototypeString)\n    {\n        return \$this->delegate->$methodName($argNameListString);\n    }";
+                } elseif ($setter) {
+                    $immediateMethods[] = "    public function $methodName($argPrototypeString)\n    {\n        \$this->delegate->$methodName($argNameListString);\n        return \$this;\n    }";
+                } elseif ($needsImplementation) {
+                    // Include an implementation for the wrapper method if necessary
+                    $methodImplementations[] = "    protected function _$methodName($argPrototypeString)\n    {\n        \$this->delegate->$methodName($argNameListString);\n    }";
+                }
+            }
+        }
+
+        $classNameParts = explode('\\', $this->className);
+        $delegate = array_pop($classNameParts);
+        $delegateNamespace = implode('\\', $classNameParts);
+
+        if (empty($this->wrapperClassName)) {
+            $this->wrapperClassName = $delegate;
+        }
+
+        $replacements['{delegateNamespace}'] = $delegateNamespace;
+        $replacements['{delegate}'] = $delegate;
+        $replacements['{wrapperClassName}'] = $this->wrapperClassName;
+        $replacements['{taskname}'] = "task$delegate";
+        $replacements['{methodList}'] = $leadingCommentChars . implode("\n$leadingCommentChars", $methodDescriptions);
+        $replacements['{immediateMethods}'] = "\n\n" . implode("\n\n", $immediateMethods);
+        $replacements['{methodImplementations}'] = "\n\n" . implode("\n\n", $methodImplementations);
+
+        $template = file_get_contents(__DIR__ . '/../../../data/Task/Development/GeneratedWrapper.tmpl');
+        $template = str_replace(array_keys($replacements), array_values($replacements), $template);
+
+        // Returning data in the $message will cause it to be printed.
+        return Result::success($this, $template);
+    }
+}