package Ġru . fab it . injection holder . callback Ċ Ċ import Ġru . fab it . injection holder . Component Owner Ċ Ċ interface ĠComponent Callback Ġ{ ĊĊĠĠĠ Ġfun Ġ< T > Ġon Add Injection ( component Owner : ĠComponent Owner < T >) ĊĊĠĠĠ Ġfun Ġ< T > Ġon Remove Injection ( component Owner : ĠComponent Owner < T >) Ċ }