code: def validate_crc(self):
      assert (
          self._decompressed is False
      ), "Validate should be called before iteration"
  
      crc = self.crc
      data_view = memoryview(self._buffer)[self.ATTRIBUTES_OFFSET :]
      verify_crc = calc_crc32c(data_view.tobytes())
      return crc == verify_crc
  
imports: import struct
  import time
  from kafka.record.abc import ABCRecord, ABCRecordBatch, ABCRecordBatchBuilder
  from kafka.record.util import decode_varint, encode_varint, calc_crc32c, size_of_varint
  from kafka.errors import CorruptRecordException, UnsupportedCodecError
  from kafka.codec import gzip_encode, snappy_encode, lz4_encode, zstd_encode, gzip_decode, snappy_decode, lz4_decode, zstd_decode
  import kafka.codec
label_desc: Use image node_id 17 for calling the DefaultRecordBatch obj's underlying member method code with example usage: obj.validate_crc() and returns: unknown