class_docstr: [`FlaxLogitsProcessor`] supressing a list of tokens as soon as the `generate` function starts generating using
  `begin_index` tokens. This should ensure that the tokens defined by `begin_suppress_tokens` are not sampled at the
  begining of the generation.
  
  Args:
      begin_suppress_tokens (`List[int]`):
          Tokens to not sample.
      begin_index (`int`):
          Index where the tokens are suppressed.
code: def __init__(self, begin_suppress_tokens, begin_index):
      self.begin_suppress_tokens = list(begin_suppress_tokens)
      self.begin_index = begin_index
  
imports: import inspect
  import jax
  import jax.lax
  import jax.numpy
  from ..utils import add_start_docstrings
  from ..utils.logging import get_logger
label_desc: Use image node_id 1 to create a new FlaxSuppressTokensAtBeginLogitsProcessor object from inherited base classes: FlaxLogitsProcessor with example: obj = FlaxSuppressTokensAtBeginLogitsProcessor(begin_suppress_tokens, begin_index)