code: def prepare(self, o):
      tree = ET.parse(str(o))
      self._root = tree.getroot()
      self._filename = self._root.find("filename").text
      self._size = self._root.find("size")
  
imports: import xml.etree.ElementTree
  from icevision.imports import *
  from icevision.utils import *
  from icevision.core import *
  from icevision.parsers.parser import *
label_desc: Use image node_id 6 for calling the VOCBBoxParser obj's underlying member method code with example usage: obj.prepare(o) without return types