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@@ -264,6 +264,22 @@ class midcom_helper_datamanager_type_baseclass implements midcom_helper_datamana
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                 return $this->convert_to_raw();
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         }
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     }
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+    
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+    /**
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+     * Magic isset for the contents of the field in a given format
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+     */
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+    public function __isset($key)
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+    {
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+        switch ($key)
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+        {
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+            case 'as_html':
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+            case 'as_csv':
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+            case 'as_raw':
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+                return true;
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+            default:
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+                return false;
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+        }
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+    }
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 }
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 ?>
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