isAlias abstract method
Checks whether the given name is registered as an alias.
Returns true if name is currently registered as an alias for
another primary name, false otherwise.
Parameters:
name: The name to check for alias status
Returns:
true if name is an alias, false if it's a primary name or not registered.
Example:
final registry = MyAliasRegistry();
registry.registerAlias('userRepository', 'userRepo');
print(registry.isAlias('userRepository')); // false - primary name
print(registry.isAlias('userRepo')); // true - alias
print(registry.isAlias('nonexistent')); // false - not registered
Implementation
bool isAlias(String name);