# Functions
Send a message to the given webhook url.
# Structs
ActionCallback specific fields for the action callback.
Attachment contains all the information for an attachment.
AttachmentAction is a button or menu to be included in the attachment.
AttachmentActionOption the individual option to appear in action menu.
AttachmentActionOptionGroup is a semi-hierarchal way to list available options to appear in action menu.
AttachmentField contains information for an attachment field An Attachment can contain multiple of these.
ConfirmationField are used to ask users to confirm actions.
Message is a Slack message payload.