docstr: Tokenizes the text and returns the number of tokens.
docstr_tok: ["Tokenizes","the","text","and","returns","the","number","of","tokens","."]
code: def get_num_tokens(self, text: str) -> int:
      """Tokenizes the text and returns the number of tokens."""
      # We need this check since we can't pass in empty string via the `tokenize` endpoint
      if len(text) == 0:
          return 0
      return len(self.encode(text).tokens)
  
imports: from typing import List, Optional
  from helm.proxy.clients.cohere_client import CohereClient
  from .local_window_service import LocalWindowService
  from .tokenizer_service import TokenizerService
  from .window_service import EncodeResult
  from helm.common.tokenization_request import TokenizationRequest, TokenizationRequestResult, TokenizationToken
label_desc: Use image node_id 8 for calling the CohereWindowService obj's underlying member method code with example usage: obj.get_num_tokens(text) and returns: len, int