config/src/main/java/org/springframework/security/config/annotation/authentication/configurers/provisioning/UserDetailsManagerConfigurer.java
@SuppressWarnings("unchecked")
	public final C withUser(User.UserBuilder userBuilder) {
		this.users.add(userBuilder.build());
		return (C) this;
	}
@SuppressWarnings("unchecked")
	public final C withUser(User.UserBuilder userBuilder) {
		this.users.add(userBuilder.build());
		return (C) this;
	}
@ SuppressWarnings ( "unchecked" ) public final C withUser ( User . UserBuilder userBuilder ) { this . users . add ( userBuilder . build ( ) ) ; return ( C ) this ; }
Allows adding a user to the {@link UserDetailsManager} that is being created. This
method can be invoked multiple times to add multiple users.

@param userBuilder the user to add. Cannot be null.
@return the {@link UserDetailsBuilder} for further customizations
Allows adding a user to the { @link UserDetailsManager } that is being created . This method can be invoked multiple times to add multiple users .