docs: def filter(self, record):
          """Determines if the record should be logged and injects context info into the record. Always returns True"""
          fmt = LogManager.spec.context_format
          if fmt:
              data = self.context.to_dict()
              if data:
                  record.context = fmt % ",".join("%s=%s" % (key, val) for key, val in sorted(data.items()) if key and val)
              else:
                  record.context = ""
          return True