code: private Object getRawValueOrNullIfAbsent(String columnName, Map<String, Object> content)
              throws SerDeException {
          try {
              return getRawValue(columnName, content);
          } catch (ColumnNotFoundException e) {
              return null;
          }
      }
docs: Like {@link #getRawValue(String, java.util.Map)} except it returns null if the value is not present.