class_docstr: Dense video captioning model with a video encoder and a text decoder.
code: def build_flax_model(self) -> nn.Module:
      return DenseVideoCaptioningModule(self.config.model)
  
imports: import functools
  from typing import Any, Dict, Mapping, Optional, Tuple
  from absl import logging
  import flax.linen
  from flax.training import common_utils
  import jax
  import jax.numpy
  import ml_collections
  from scenic.model_lib.base_models import base_model
  from scenic.model_lib.base_models import model_utils
  from scenic.projects.baselines import vit
  from scenic.projects.t5 import layers
  from scenic.projects.t5 import model
  from t5x import decoding
  from t5x.models import DecodeFnCallable
label_desc: Use image node_id 1 for calling the DenseVideoCaptioningModel obj's underlying member method code with example usage: obj.build_flax_model() and returns: DenseVideoCaptioningModule