MessageProperty constructor
Create a diagnostics property that displays a message.
Messages have no concrete value (so value will return null). The message is stored as the description.
The name
, message
, and level
arguments must not be null.
Implementation
MessageProperty(String name, String message, {
DiagnosticLevel level = DiagnosticLevel.info,
}) : assert(name != null),
assert(message != null),
assert(level != null),
super(name, null, description: message, level: level);