Identify the use and behavior of the MessageDrivenContext interface methods.

The container provides the message-driven bean instance with a MessageDrivenContext. This gives the message-driven bean instance access to the instance's context maintained by the container. The MessageDrivenContext interface has the following methods:

package javax.ejb;

public interface MessageDrivenContext extends EJBContext {

public interface EJBContext {
	EJBHome getEJBHome();
	EJBLocalHome getEJBLocalHome(); getCallerPrincipal();
	boolean isCallerInRole(String roleName);
	UserTransaction getUserTransaction() throws IllegalStateException;
	void setRollbackOnly() throws IllegalStateException;
	boolean getRollbackOnly() throws IllegalStateException;

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