code: def timeunits(self):
      return ["ns", "us", "ms", "s"]
  
imports: import json
  from .profiler_reader import ProfilerReader
  from visualdl.server.api import gen_result
  from visualdl.server.api import result
label_desc: Use image node_id 6 for calling the ProfilerApi obj's underlying member method code with example usage: obj.timeunits() and returns: list