docs: def get_meta(self, key, conforming=True):
          """
          RETURN METADATA ON FILE IN BUCKET
          :param key:  KEY, OR PREFIX OF KEY
          :param conforming: TEST IF THE KEY CONFORMS TO REQUIRED PATTERN
          :return: METADATA, IF UNIQUE, ELSE ERROR
          """
          try:
              metas = list(self.bucket.list(prefix=key))
              metas = wrap([m for m in metas if m.name.find(".json") != -1])
  
              perfect = Null
              favorite = Null
              too_many = False
              error = None
              for m in metas:
                  try:
                      simple = strip_extension(m.key)
                      if conforming:
                          self._verify_key_format(simple)
                      if simple == key:
                          perfect = m
                          too_many = False
                      if simple.startswith(key + ".") or simple.startswith(key + ":"):
                          if favorite and not perfect:
                              too_many = True
                          favorite = m
                  except Exception as e:
                      error = e
  
              if too_many:
                  Log.error(
                      "multiple keys in {{bucket}} with prefix={{prefix|quote}}: {{list}}",
                      bucket=self.name,
                      prefix=key,
                      list=[k.name for k in metas]
                  )
              if not perfect and error:
                  Log.error("Problem with key request", error)
              return coalesce(perfect, favorite)
          except Exception as e:
              Log.error(READ_ERROR+" can not read {{key}} from {{bucket}}", key=key, bucket=self.bucket.name, cause=e)