How to use the mediapipe.util.sequence.media_sequence_util.create_bytes_list_context_feature function in mediapipe

"""Create multiple accessors for image based data."""
  msu.create_bytes_context_feature(name + "_format", IMAGE_FORMAT_KEY,
                                   prefix=prefix, module_dict=globals())
  msu.create_bytes_context_feature(name + "_colorspace", IMAGE_COLORSPACE_KEY,
                                   prefix=prefix, module_dict=globals())
  msu.create_int_context_feature(name + "_channels", IMAGE_CHANNELS_KEY,
                                 prefix=prefix, module_dict=globals())
  msu.create_int_context_feature(name + "_height", IMAGE_HEIGHT_KEY,
                                 prefix=prefix, module_dict=globals())
  msu.create_int_context_feature(name + "_width", IMAGE_WIDTH_KEY,
                                 prefix=prefix, module_dict=globals())
  msu.create_bytes_feature_list(name + "_encoded", IMAGE_ENCODED_KEY,
                                prefix=prefix, module_dict=globals())
  msu.create_float_context_feature(name + "_frame_rate", IMAGE_FRAME_RATE_KEY,
                                   prefix=prefix, module_dict=globals())
  msu.create_bytes_list_context_feature(
      name + "_class_label_string", IMAGE_CLASS_LABEL_STRING_KEY,
      prefix=prefix, module_dict=globals())
  msu.create_int_list_context_feature(
      name + "_class_label_index", IMAGE_CLASS_LABEL_INDEX_KEY,
      prefix=prefix, module_dict=globals())
  msu.create_int_list_context_feature(
      name + "_object_class_index", IMAGE_OBJECT_CLASS_INDEX_KEY,
      prefix=prefix, module_dict=globals())
  msu.create_bytes_context_feature(name + "_data_path", IMAGE_DATA_PATH_KEY,
                                   prefix=prefix, module_dict=globals())
  msu.create_int_feature_list(name + "_timestamp", IMAGE_TIMESTAMP_KEY,
                              prefix=prefix, module_dict=globals())
  msu.create_bytes_list_feature_list(name + "_multi_encoded",
                                     IMAGE_MULTI_ENCODED_KEY, prefix=prefix,
                                     module_dict=globals())
FORWARD_FLOW_PREFIX = "FORWARD_FLOW"

msu.create_float_list_feature_list(
      name + "_track_confidence", REGION_TRACK_CONFIDENCE_KEY,
      prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_ymin", REGION_BBOX_YMIN_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_xmin", REGION_BBOX_XMIN_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_ymax", REGION_BBOX_YMAX_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_xmax", REGION_BBOX_XMAX_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_point_x", REGION_POINT_X_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_point_y", REGION_POINT_Y_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_bytes_list_context_feature(name + "_parts",
                                        REGION_PARTS_KEY,
                                        prefix=prefix, module_dict=globals())
  msu.create_float_list_context_feature(
      name + "_embedding_dimensions_per_region",
      REGION_EMBEDDING_DIMENSIONS_PER_REGION_KEY,
      prefix=prefix, module_dict=globals())
  msu.create_bytes_context_feature(name + "_embedding_format",
                                   REGION_EMBEDDING_FORMAT_KEY,
                                   prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_embedding_floats",
                                     REGION_EMBEDDING_FLOAT_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_bytes_list_feature_list(name + "_embedding_encoded",
                                     REGION_EMBEDDING_ENCODED_KEY,
                                     prefix=prefix, module_dict=globals())
  msu.create_float_list_feature_list(name + "_embedding_confidence",

# A list of indices marking the first frame index >= the start timestamp.
SEGMENT_START_INDEX_KEY = "segment/start/index"
# A list of segment end times in microseconds.
SEGMENT_END_TIMESTAMP_KEY = "segment/end/timestamp"
# A list of indices marking the last frame index <= the end timestamp.
SEGMENT_END_INDEX_KEY = "segment/end/index"
# A list with the label index for each segment.
# Multiple labels for the same segment are encoded as repeated segments.
SEGMENT_LABEL_INDEX_KEY = "segment/label/index"
# A list with the label string for each segment.
# Multiple labels for the same segment are encoded as repeated segments.
SEGMENT_LABEL_STRING_KEY = "segment/label/string"
# A list with the label confidence for each segment.
# Multiple labels for the same segment are encoded as repeated segments.
SEGMENT_LABEL_CONFIDENCE_KEY = "segment/label/confidence"
msu.create_bytes_list_context_feature(
    "segment_label_string", SEGMENT_LABEL_STRING_KEY, module_dict=globals())
msu.create_int_list_context_feature(
    "segment_start_timestamp",
    SEGMENT_START_TIMESTAMP_KEY, module_dict=globals())
msu.create_int_list_context_feature(
    "segment_start_index", SEGMENT_START_INDEX_KEY, module_dict=globals())
msu.create_int_list_context_feature(
    "segment_end_timestamp", SEGMENT_END_TIMESTAMP_KEY, module_dict=globals())
msu.create_int_list_context_feature(
    "segment_end_index", SEGMENT_END_INDEX_KEY, module_dict=globals())
msu.create_int_list_context_feature(
    "segment_label_index", SEGMENT_LABEL_INDEX_KEY, module_dict=globals())
msu.create_float_list_context_feature(
    "segment_label_confidence",
    SEGMENT_LABEL_CONFIDENCE_KEY, module_dict=globals())

msu.create_bytes_context_feature(
    "clip_alternative_media_id", ALTERNATIVE_CLIP_MEDIA_ID_KEY,
    module_dict=globals())
msu.create_bytes_context_feature(
    "clip_encoded_media_bytes", CLIP_ENCODED_MEDIA_BYTES_KEY,
    module_dict=globals())
msu.create_bytes_context_feature(
    "clip_data_path", CLIP_DATA_PATH_KEY, module_dict=globals())
msu.create_int_context_feature(
    "clip_encoded_media_start_timestamp",
    CLIP_ENCODED_MEDIA_START_TIMESTAMP_KEY, module_dict=globals())
msu.create_int_context_feature(
    "clip_start_timestamp", CLIP_START_TIMESTAMP_KEY, module_dict=globals())
msu.create_int_context_feature(
    "clip_end_timestamp", CLIP_END_TIMESTAMP_KEY, module_dict=globals())
msu.create_bytes_list_context_feature(
    "clip_label_string", CLIP_LABEL_STRING_KEY, module_dict=globals())
msu.create_int_list_context_feature(
    "clip_label_index", CLIP_LABEL_INDEX_KEY, module_dict=globals())
msu.create_float_list_context_feature(
    "clip_label_confidence", CLIP_LABEL_CONFIDENCE_KEY, module_dict=globals())

##################################  SEGMENTS  #################################
# A list of segment start times in microseconds.
SEGMENT_START_TIMESTAMP_KEY = "segment/start/timestamp"
# A list of indices marking the first frame index >= the start timestamp.
SEGMENT_START_INDEX_KEY = "segment/start/index"
# A list of segment end times in microseconds.
SEGMENT_END_TIMESTAMP_KEY = "segment/end/timestamp"
# A list of indices marking the last frame index <= the end timestamp.
SEGMENT_END_INDEX_KEY = "segment/end/index"
# A list with the label index for each segment.