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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ProcessContent(self, strip_expansion=False):
 """Processes the file contents."""

    self._ParseFile()
    if strip_expansion:
      # Without a collection the expansions become blank, removing them.
      collection = None
    else:
      collection = MacroCollection()
    for section in self._sections:
      section.BindMacroCollection(collection)
    result = ''
    for section in self._sections:
      result += section.text
    self._processed_content = result