question: private Element createKeyValue ( ) throws Exception { Element keyValueEle = null ; PrivateKey key = idmClient . getTenantPrivateKey ( tenantName ) ; if ( key != null ) { RSAPrivateKey rsaKey = ( RSAPrivateKey ) key ; Element rsaKeyEle = createRSAKeyValue ( rsaKey ) ; if ( rsaKeyEle != null ) { keyValueEle = doc . createElement ( SAMLNames . DS_KEYVALUE ) ; keyValueEle . appendChild ( rsaKeyEle ) ; } } return keyValueEle ; }
target:  Return a ds:KeyValue Element in DOM. KeyValue | -----RsaKeyValue