usageException method

void usageException(
  1. String message
)

Calling this will throw a UsageException with message that should be caught by CommandRunner and used to set the exit code accordingly and print out usage information.

Implementation

void usageException(String message) {
  if (_usageException != null) {
    _usageException!(message);
  }
  throw UsageException(message, '');
}