class_docstr: Utility class responsible from creating a tensor tracer report.
docstr: Returns the path where report proto should be written.
  
  Args:
    trace_dir: String denoting the trace directory.
    summary_tag_name: Name of the unique tag that relates to
                      the report.
  Returns:
    A string denoting the path to the report proto.
code: def report_proto_path(self, trace_dir, summary_tag_name):
      """Returns the path where report proto should be written.
  
      Args:
        trace_dir: String denoting the trace directory.
        summary_tag_name: Name of the unique tag that relates to
                          the report.
      Returns:
        A string denoting the path to the report proto.
      """
      filename = (
          _TT_REPORT_PROTO + "." + summary_tag_name.replace("/", "_")
      )
      return os.path.join(trace_dir, filename)
  
imports: import collections
  import hashlib
  import os
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.tpu import tensor_tracer_pb2
label_desc: Use image node_id 6 for calling the TTReportHandle obj's underlying member method code with example usage: obj.report_proto_path(trace_dir, summary_tag_name) and returns: os