class_docstr: Distributions Plugin for TensorBoard.
  
  This supports both old-style summaries (created with TensorFlow ops
  that output directly to the `histo` field of the proto) and new-
  style summaries (as created by the
  `tensorboard.plugins.histogram.summary` module).
class_docstr_tok: ["Distributions","Plugin","for","TensorBoard",".","This","supports","both","old-style","summaries","(","created","with","TensorFlow","ops","that","output","directly","to","the","`","histo","`","field","of","the","proto",")","and","new-","style","summaries","(","as","created","by","the","`","tensorboard.plugins.histogram.summary","`","module",")","."]
code: def _compress(self, histogram):
      (wall_time, step, buckets) = histogram
      converted_buckets = compressor.compress_histogram(buckets)
      return [wall_time, step, converted_buckets]
  
file_path: tensorboard/tensorboard/plugins/distribution/distributions_plugin.py
imports: from werkzeug import wrappers
  from tensorboard import plugin_util
  from tensorboard.backend import http_util
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.distribution import compressor
  from tensorboard.plugins.distribution import metadata
  from tensorboard.plugins.histogram import histograms_plugin
label_desc: Use image node_id 7 for calling the DistributionsPlugin obj's underlying member method code with example usage: obj._compress(histogram) and returns: list