code: public void insert(final TableEntity entity, boolean echoContent) {
          this.lockToPartitionKey(entity.getPartitionKey());
          this.add(TableOperation.insert(entity, echoContent));
      }
docs: Adds a table operation to insert the specified entity to the batch operation.
  
  @param entity
  The {@link TableEntity} to insert.
  @param echoContent
  The boolean representing whether the message payload should be returned in the response.