public version()
 {
     this.typeField = "Int32";
     this.generatedField = versionGeneration.never;
 }
 public version()
 {
     columnField = new List<Column>();
     metaField = new List<meta>();
     typeField = "Int32";
     generatedField = versionGeneration.never;
 }
 public timestamp()
 {
     this.sourceField = timestampSource.vm;
     this.generatedField = versionGeneration.never;
 }
 public timestamp()
 {
     metaField = new List<meta>();
     sourceField = timestampSource.vm;
     generatedField = versionGeneration.never;
 }