code: public void add(long timestamp, String column, Object value) {
          if (!(value instanceof Long) && !(value instanceof Integer) && !(value instanceof Double) &&
              !(value instanceof Float) && !(value instanceof Boolean) &&
              !(value instanceof String)) {
              throw new IllegalArgumentException(
                  "value must be of type: Long, Integer, Double, Float, Boolean, or String");
          }
          Map<String, Object> temp = new HashMap<String, Object>();
          temp.put(column, value);
          add(timestamp, temp);
      }
docs: Add a data row, consisting of one column, to the store at a particular time.
  
  @param timestamp Timestamp for the data point.
  @param column    The column for a field to value mapping
  @param value     The value for a field to value mapping