code: private List<HBaseCell> getRelationCell(EntityMetadata m, Object rowId, List<RelationHolder> relations)
              throws IOException
      {
          List<HBaseCell> relationCells = new ArrayList<HBaseCell>();
          for (RelationHolder relation : relations)
          {
              HBaseCell hBaseCell = new HBaseCell(m.getTableName(), relation.getRelationName(),
                      relation.getRelationValue());
              relationCells.add(hBaseCell);
          }
          return relationCells;
      }
docs: Gets the relation cell.
  
  @param m
  the m
  @param rowId
  the row id
  @param relations
  the relations
  @return the relation cell
  @throws IOException
  Signals that an I/O exception has occurred.