public Principal(String accountId) {this("AWS", accountId);if (accountId == null) {throw new IllegalArgumentException("Null AWS account ID specified");}}

public Principal ( String accountId ) { this ( "AWS" , accountId ) ; if ( accountId == null ) { throw new IllegalArgumentException ( "Null AWS account ID specified" ) ; } }
public Principal(string accountId): this(AWS_PROVIDER, accountId){if (accountId == null){throw new ArgumentNullException("accountId");}}
