def rfc2426(self):
if self.uri:<EOL><INDENT>return rfc2425encode(self.name,self.uri,{"<STR_LIT:value>":"<STR_LIT>"})<EOL><DEDENT>elif self.sound:<EOL><INDENT>return rfc2425encode(self.name,self.sound)<EOL><DEDENT>
RFC2426-encode the field content.

        :return: the field in the RFC 2426 format.
        :returntype: `str`