code: private void onSetComment(CfDef cfDef, Properties cfProperties, StringBuilder builder)
      {
          String comment = cfProperties.getProperty(CassandraConstants.COMMENT);
          if (comment != null)
          {
              if (builder != null)
              {
                  String comment_Str = CQLTranslator.getKeyword(CassandraConstants.COMMENT);
                  builder.append(comment_Str);
                  builder.append(CQLTranslator.EQ_CLAUSE);
                  builder.append(CQLTranslator.QUOTE_STR);
                  builder.append(comment);
                  builder.append(CQLTranslator.QUOTE_STR);
                  builder.append(CQLTranslator.AND_CLAUSE);
  
              }
              else
              {
                  cfDef.setComment(comment);
              }
          }
      }
docs: On set comment.
  
  @param cfDef
  the cf def
  @param cfProperties
  the cf properties
  @param builder
  the builder