docs: def to_file(self, outputfile=DEFAULT_OUTPUTFILE):
          """Write the report to a file.
          
          By default a name is generated.
  
          Parameters:
          ----------
          outputfile : str
              The name or the path of the file to generale including the extension (.html).
          """
      
          if outputfile != NO_OUTPUTFILE:
              if outputfile == DEFAULT_OUTPUTFILE:
                  outputfile = 'profile_' + str(hash(self)) + ".html"
              # TODO: should be done in the template
              with codecs.open(outputfile, 'w+b', encoding='utf8') as self.file:
                  self.file.write(templates.template('wrapper').render(content=self.html))