@objc(SBDAdminMessage) open class AdminMessage : BaseMessage
AdminMessage class represents a message which is sent by an admin
via Platform API. The admin message
doesn’t have a sender. This message is sutable for a notice to inform the members
in a group channel or the participants in an open channel. If you would like to know about the Platform API
for the message, see Send a message.
Encodes this object.
open override func encode(to encoder: Encoder) throws