tensorflow_lattice/python/estimators.py [833:866]:
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    model_config = copy.deepcopy(model_config)
    _update_by_feature_columns(model_config, feature_columns)

    _finalize_keypoints(
        model_config=model_config,
        config=config,
        feature_columns=feature_columns,
        feature_analysis_input_fn=feature_analysis_input_fn,
        feature_analysis_weight_column=feature_analysis_weight_column,
        feature_analysis_weight_reduction=feature_analysis_weight_reduction,
        logits_output=True)

    _verify_config(model_config, feature_columns)

    _finalize_model_structure(
        label_dimension=label_dimension,
        feature_columns=feature_columns,
        head=head,
        model_config=model_config,
        prefitting_input_fn=prefitting_input_fn,
        prefitting_optimizer=prefitting_optimizer,
        prefitting_steps=prefitting_steps,
        model_dir=model_dir,
        config=config,
        warm_start_from=warm_start_from,
        dtype=dtype)

    model_fn = _get_model_fn(
        label_dimension=label_dimension,
        feature_columns=feature_columns,
        head=head,
        model_config=model_config,
        optimizer=optimizer,
        dtype=dtype)
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tensorflow_lattice/python/estimators.py [1005:1038]:
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    model_config = copy.deepcopy(model_config)
    _update_by_feature_columns(model_config, feature_columns)

    _finalize_keypoints(
        model_config=model_config,
        config=config,
        feature_columns=feature_columns,
        feature_analysis_input_fn=feature_analysis_input_fn,
        feature_analysis_weight_column=feature_analysis_weight_column,
        feature_analysis_weight_reduction=feature_analysis_weight_reduction,
        logits_output=True)

    _verify_config(model_config, feature_columns)

    _finalize_model_structure(
        label_dimension=label_dimension,
        feature_columns=feature_columns,
        head=head,
        model_config=model_config,
        prefitting_input_fn=prefitting_input_fn,
        prefitting_optimizer=prefitting_optimizer,
        prefitting_steps=prefitting_steps,
        model_dir=model_dir,
        config=config,
        warm_start_from=warm_start_from,
        dtype=dtype)

    model_fn = _get_model_fn(
        label_dimension=label_dimension,
        feature_columns=feature_columns,
        head=head,
        model_config=model_config,
        optimizer=optimizer,
        dtype=dtype)
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