[BCP54]    Best Current Practice 54,
              <https://www.rfc-editor.org/info/bcp54>.
              At the time of writing, this BCP comprises the following:

              Moonesamy, S., Ed., "IETF Guidelines for Conduct", BCP 54,
              RFC 7154, DOI 10.17487/RFC7154, March 2014,
              <https://www.rfc-editor.org/info/rfc7154>.