public boolean containsKey ( String inputKey ) { String key = Normalizer . normalize ( inputKey , Normalizer . NORMALIZE_LOWER ) ; List < String > list = this . values . get ( key ) ; boolean rc = ( null == list ) ? false : ! list . isEmpty ( ) ; if ( TraceComponent . isAnyTracingEnabled ( ) && tc . isDebugEnabled ( ) ) { Tr . debug ( tc , "containsKey: key=" + inputKey + " rc=" + rc ) ; } return rc ; }
Query whether the target key exists with any values in this handler .