role problem

role problem

#|{
Base role for Antennas
}
role HG::Antenna
{
    has $.receiver    is rw;
    has $.transmitter is rw;
    has Str $.recv-format is rw = 'html';
    has Str $.xmit-format is rw = 'html';

    method connect()            {...}
    method sendto-receiver()    {...}
    method getfor-transmitter() {...}
    method transmit()           {...}
}