Sleep for the duration specified in duration
.
Use this with care, as no asynchronous operations can be processed in a isolate while it is blocked in a sleep call.
Source
void sleep(Duration duration) { int milliseconds = duration.inMilliseconds; if (milliseconds < 0) { throw new ArgumentError("sleep: duration cannot be negative"); } if (!_EmbedderConfig._maySleep) { throw new UnsupportedError( "This embedder disallows calling dart:io's sleep()"); } _ProcessUtils._sleep(milliseconds); }