parameters: (self, category, count=1)
docstring: Adds count of the category to the frequency table.
  
      Args:
        category: string or integer, category to add frequency to.
        count: optional integer, how many to add.
docstring_summary: Adds count of the category to the frequency table.
docstring_tokens: Adds count of the category to the frequency table .
function: def add(self, category, count=1):
      """Adds count of the category to the frequency table.
  
      Args:
        category: string or integer, category to add frequency to.
        count: optional integer, how many to add.
      """
      category_id = self.get(category)
      if category_id <= 0:
        return
      self._freq[category] += count
function_tokens: def add ( self , category , count = 1 ) : category_id = self . get ( category ) if category_id <= 0 : return self . _freq [ category ] += count