public override MSAst.Expression Reduce() {
// Transform to series of individual del statements.
ReadOnlyCollectionBuilder<MSAst.Expression> statements = new ReadOnlyCollectionBuilder<MSAst.Expression>(_expressions.Length + 1);
for (int i = 0; i < _expressions.Length; i++) {
statements.Add(_expressions[i].TransformDelete());
}
statements.Add(AstUtils.Empty());
return GlobalParent.AddDebugInfo(MSAst.Expression.Block(statements), Span);
}