getNumberOfPodDefinitions abstract method

Returns the total number of pods registered.

This method provides a count of all pods currently registered, which is useful for monitoring, capacity planning, and testing.

Returns the total number of pods in the registry. Returns 0 if the registry is empty.

Example:

final count = registry.getDefinitionCount();
print('Total pods registered: $count');

if (count == 0) {
  print('Registry is empty - initializing default pods...');
  initializeDefaultPods(registry);
}