What are the naming rules for methods in the Dart language?

In Dart, method names follow several rules:

• snake_case: Preferred naming style for methods (and functions).
• Names must start with a letter or underscore (_).
• They can contain letters, digits, and underscores (_).
• Cannot be reserved Dart keywords (e.g., if, for, class).
• Methods starting with an underscore (_) are considered private to the library in which they are defined.

Example:

// Public method
void processData() {
  // ...
}

// Private method (for use within the library)
void _calculateInternalValue() {
  // ...
}

// Method with parameters
String formatMessage(String message, int repeatCount) {
  // ...
  return repeatedMessage;
}