question: public static boolean isValidFullname ( String fullname ) { if ( fullname . length ( ) == 0 ) return true ; char c = fullname . charAt ( 0 ) ; if ( ! isValidFullnameFirstCharacter ( c ) ) return false ; for ( int i = 1 ; i != fullname . length ( ) ; ++ i ) { c = fullname . charAt ( i ) ; if ( ! isValidFullnameNonFirstCharacter ( c ) ) return false ; } return true ; }
target:  Determine if the supplied string is a valid Avro namespace.