If you have not enabled the prevent duplicated messages or the restart message display timer functionality, this property can be omitted since it is only used for those flows.
When the addMessage action is called, the existing queue will be checked
							for a message containing the new message's id. If it exists, it will not be
							re-added to the queue. If the current message is being displayed, the
						display timer will be restarted.
An optional priority to set to the message if this message needs to be
								shown to the user more quickly. The default behavior will be to add it to
								the end of the message queue, but when the priority is set to "next" it
								will be shown immediately if there are no messages being displayed or
								immediately after the current displayed message is hidden. All other
								existing messages will maintain their order but pushed behind this new
							message.
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Boolean if the message should not automatically hide itself after the timeout duration. This should normally be enabled if you want to enforce the user presses the action inside or it is a toast that will be hidden by some other logic (like online/offline).
false