question: @ Override public String chooseServerAlias ( final String keyType , final Principal [ ] issuers , final Socket socket ) { if ( keyManager != null ) { return keyManager . chooseServerAlias ( keyType , issuers , socket ) ; } return null ; }
target:  Choose an alias to authenticate the client side of a secure socket given the public key type and the list of certificate issuer authorities recognized by the peer (if any).