isNameInUse abstract method

Returns true if name is currently in use in this registry.

This method checks if a pod name is already registered, which is useful for validating new pod registrations and preventing name conflicts.

name: The pod name to check for availability Returns true if the name is already registered, false if available

Example:

final proposedName = 'newService';
if (registry.isNameInUse(proposedName)) {
  throw PodException('Pod name "$proposedName" is already registered');
} else {
  registry.registerDefinition(proposedName, newServicePod);
}