Added getStructure() function to the Attachment class.

src/Fetch/Attachment.php

@@ -158,6 +158,16 @@ class Attachment
         return $this->size;
     }
 
+    /**
+     * This function returns the object that contains the structure of this attachment.
+     * 
+     * @return \stdClass
+     */
+    public function getStructure()
+    {
+        return $this->structure;
+    }
+
     /**
      * This function saves the attachment to the passed directory, keeping the original name of the file.
      *