parameters: (self, do_lower_case=True)
docstring: Constructs a BasicTokenizer.
  
      Args:
        do_lower_case: Whether to lower case the input.
docstring_summary: Constructs a BasicTokenizer.
docstring_tokens: Constructs a BasicTokenizer .
function: def __init__(self, do_lower_case=True):
      """Constructs a BasicTokenizer.
  
      Args:
        do_lower_case: Whether to lower case the input.
      """
      self.do_lower_case = do_lower_case
function_tokens: def __init__ ( self , do_lower_case = True ) : self . do_lower_case = do_lower_case