/// <summary>
/// constructor
/// </summary>
public UnifiedJsonWriter(StreamWriter writer, string creationTime, string vepDataVersion, IEnumerable <IDataSourceVersion> iDataSourceVersions, string genomeAssembly, string[] sampleNames)
{
_writer = writer;
_writer.NewLine = "\n";
var dataSourceVersions = iDataSourceVersions?.Select(iDataSourceVersion => iDataSourceVersion as DataSourceVersion).ToList();
// write the header
_writer.Write(UnifiedJson.GetHeader(NirvanaAnnotationSource.GetVersion(), creationTime, genomeAssembly,
JsonCommon.SchemaVersion, vepDataVersion, dataSourceVersions, sampleNames));
}
