impl MaxOneMarker for Bcc
[src]impl MaxOneMarker for Cc
[src]impl MaxOneMarker for ContentDescription
[src]impl MaxOneMarker for ContentDisposition
[src]impl MaxOneMarker for ContentId
[src]impl MaxOneMarker for ContentTransferEncoding
[src]impl MaxOneMarker for ContentType
[src]impl MaxOneMarker for Date
[src]impl MaxOneMarker for InReplyTo
[src]impl MaxOneMarker for MessageId
[src]impl MaxOneMarker for References
[src]impl MaxOneMarker for ReplyTo
[src]impl MaxOneMarker for Sender
[src]impl MaxOneMarker for Subject
[src]impl MaxOneMarker for _From
[src]impl MaxOneMarker for _To
[src]