column matrix of counts or proportions. For
          <code>family="multinomial"</code>, can be a <code>nc&gt;=2</code> level factor, or a
          matrix with <code>nc</code> columns of counts or proportions. For
          <code>family="cox"</code>, <code>y</code> should be a two-column matrix with
          columns named 'time' and 'status'. The latter is a binary
          variable, with '1' indicating death, and '0' indicating right
          censored. The function <code><a href='https://rdrr.io/pkg/su