class_docstr: Represent a GCS Object, including all its revisions.
class_docstr_tok: ["Represent","a","GCS","Object",",","including","all","its","revisions","."]
docstr: Delete a version of a fake GCS Blob.
  
  :param request:flask.Request the contents of the HTTP request.
  :return: True if the object entry in the Bucket should be deleted.
  :rtype: bool
docstr_tok: ["Delete","a","version","of","a","fake","GCS","Blob",".",":","param","request",":","flask.Request","the","contents","of","the","HTTP","request",".",":","return",":","True","if","the","object","entry","in","the","Bucket","should","be","deleted",".",":","rtype",":","bool"]
code: def del_revision(self, request):
      """Delete a version of a fake GCS Blob.
  
      :param request:flask.Request the contents of the HTTP request.
      :return: True if the object entry in the Bucket should be deleted.
      :rtype: bool
      """
      generation = (
          request.args.get("generation") or self.current_generation
      )
      if generation is None:
          return True
      self.revisions.pop(generation)
      if len(self.revisions) == 0:
          self.current_generation = None
          return True
      self.current_generation = sorted(self.revisions.keys())[-1]
      return False
  
imports: import base64
  import crc32c
  import error_response
  import hashlib
  import json
  import struct
  import testbench_utils
  import time
label_desc: Use image node_id 3 for calling the GcsObject obj's underlying member method code with example usage: obj.del_revision(request) and returns: False, True, True