getId abstract method

Returns a unique identifier for this application context.

The identifier serves multiple purposes:

• Logging and Monitoring: Distinguish between multiple contexts in logs
• JMX and Management: Identify context in management systems
• Debugging: Correlate context instances during development
• Serialization: Provide context identity in distributed scenarios

Identifier Characteristics:

• Typically assigned during context creation
• Should be unique within the same JVM/process
• Usually includes context type and sequence information
• Can be used in parent-child context relationships

Example:

final contextId = applicationContext.getId();
print("Operating context: $contextId");
logger.info("Context $contextId initialized successfully");

// Typical ID formats:
// "AnnotationConfigApplicationContext-1"
// "GenericApplicationContext-main"
// "WebApplicationContext-dispatcher"