docs: public T initInstance(T instance, ColumnList<String> columns) {
          for (com.netflix.astyanax.model.Column<String> column : columns) {
              Field field = fields.get(column.getName());
              if (field != null) { // otherwise it may be a column that was
                                   // removed, etc.
                  Coercions.setFieldFromColumn(instance, field, column);
              }
          }
          return instance;
      }