package Ġcom . four teen rows . p 2 pcs . activities . reservation . add _ reservation Ċ Ċ interface ĠI Add Reservation Presenter Ġ{ ĊĠĠĠ Ġfun Ġcheck Values ( date : ĠString , Ġzone : ĠString ) ĊĠĠĠ Ġfun Ġinsert Reservation () ĊĠĠĠ Ġfun Ġget Owner ( owner : ĠString ) ĊĠĠĠ Ġfun Ġget Uid (): ĠString ? Ċ }