public BoundForStatement(ForStatementSyntax syntax, string identifier, BaseBoundExpression fromExpression, BaseBoundExpression toExpression, BaseBoundExpression stepExpressionOpt, BoundStatementBlock body)
{
Debug.Assert(!syntax.IsDefault(), "'syntax' must not be null.");
Debug.Assert(!identifier.IsDefault(), "'identifier' must not be null.");
Debug.Assert(!fromExpression.IsDefault(), "'fromExpression' must not be null.");
Debug.Assert(!toExpression.IsDefault(), "'toExpression' must not be null.");
Debug.Assert(!body.IsDefault(), "'body' must not be null.");
this.Syntax = syntax;
this.Identifier = identifier;
this.FromExpression = fromExpression;
this.ToExpression = toExpression;
this.StepExpressionOpt = stepExpressionOpt;
this.Body = body;
}