/// <summary>
/// Bulk insert a list of data entity objects into the database in an asynchronous way.
/// </summary>
/// <param name="entities">The list of the data entities to be bulk-inserted.</param>
/// <param name="mappings">The list of the columns to be used for mappings. If this parameter is not set, then all columns will be used for mapping.</param>
/// <param name="options">The bulk-copy options to be used.</param>
/// <param name="batchSize">The size per batch to be used.</param>
/// <param name="transaction">The transaction to be used.</param>
/// <returns>The number of rows affected by the execution.</returns>
public Task <int> BulkInsertAsync(IEnumerable <TEntity> entities,
IEnumerable <BulkInsertMapItem> mappings = null,
SqlBulkCopyOptions options = SqlBulkCopyOptions.Default,
int?batchSize = null,
IDbTransaction transaction = null)
{
return(DbRepository.BulkInsertAsync <TEntity>(entities: entities,
mappings: mappings,
options: options,
batchSize: batchSize,
transaction: transaction));
}