SuppliedNamedLocalThread<T> class final

A NamedLocalThread that provides an initial value using a Supplier function.

Extends NamedLocalThread to include a supplier function that provides the initial value for the thread-local variable when it is first accessed in a thread.

Key Features:

• Descriptive name for identification
• Supplier function for initial values
• Thread-safe initialization
• Combines naming with convenient initialization

Usage Example:

// Create a thread-local with initial value supplier
final counter = SuppliedNamedThreadLocal<int>(
  'requestCounter',
  () => 0, // Initial value for each thread
);

// In each thread, the initial value is automatically set to 0
print(counter.get()); // 0 (initial value from supplier)

// Increment the counter
counter.set(counter.get()! + 1);
print(counter.get()); // 1

// New thread gets fresh initial value
await Isolate.run(() {
  print(counter.get()); // 0 (new thread, new initial value)
});