Check if a message has a POI location bound to it.
These locations are also returned by get_locations
method.
The UI may decide to display a special icon beside such messages.
if is_info is set, this refers to the contact profile that should be opened when the info message is tapped.
True if the message was sent by a bot.
True if the message was correctly encrypted&signed, false otherwise. Historically, UIs showed a small padlock on the message then.
Today, the UIs should instead show a small email-icon on the message
if show_padlock
is false
,
and nothing if it is true
.
when is_info is true this describes what type of system message it is
An error text, if there is one.