/// <summary>
/// Initializes a new assignment expression.
/// </summary>
/// <param name="left">The left operand of the assignment.</param>
/// <param name="right">The right operand of the assignment.</param>
/// <exception cref="ArgumentException"><paramref name="right"/> is not assignable to <paramref name="left"/>.</exception>
public NullCoalescingAssignmentExpression(IndexExpression left, Expression right)
: this(left.As <Expression>(), right)
{
}
