MentionHostContext is defined in the Telligent.Evolution.Extensibility.Content.Version1 namespace.
Definition
class MentionHostContext
{
MentionHostContext();
Guid? ApplicationId { get; set; }
Guid? ApplicationTypeId { get; set; }
Guid? ContainerId { get; set; }
Guid? ContainerTypeId { get; set; }
Guid? ContentId { get; set; }
}