code: def to_utc_if_naive(dateTime):
      if dateTime is not None and dt.datetime_is_naive(dateTime):
          dateTime = dt.as_utc(dateTime)
      return dateTime
  
imports: from pyalgotrade import barfeed
  from pyalgotrade import bar
  from pyalgotrade.barfeed import csvfeed
  from pyalgotrade.utils import dt
  import datetime
label_desc: Use image node_id 1 for calling a global function with example usage: to_utc_if_naive(dateTime) and returns: dateTime