ChatMessage

Creates a ChatMessage

Parameters:

Name Type Description

messageMap

Object

Message parameters

Name	Type	Attributes	Default	Description
`id`	string			ID
`text`	string	<optional>		Text
`author`	User			Author
`attachments`	Array.<MediaAttachment>	<optional>	[]	Attachments
`properties`	Object.<string, string>	<optional>	{}	Properties
`sentAt`	number	<optional>	0	Date when it was sent