code: def encoder_seq_length(self):
      return self.get_subsampled_output_lengths(self.seq_length)
  
imports: import functools
  import inspect
  import tempfile
  import unittest
  import transformers
  from transformers import WhisperConfig, is_flax_available
  from transformers.testing_utils import is_pt_flax_cross_test, require_flax, slow
  from transformers.utils import cached_property
  from transformers.utils.import_utils import is_datasets_available
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_flax_common import FlaxModelTesterMixin, floats_tensor
label_desc: Use image node_id 7 for calling the FlaxWhisperEncoderModelTester obj's underlying member method code with example usage: obj.encoder_seq_length() and returns: self