/// <summary>
/// Constructs an instance of <c>PropertyExpressionPart</c>.
/// </summary>
/// <param name="nextPart">
/// The next part in the chain of parts held in the <see cref="PropertyExpression"/>.
/// </param>
protected PropertyExpressionPart(PropertyExpressionPart nextPart)
{
_nextPart = nextPart;
_object = new WeakReference(null);
}
/// <summary>
/// Constructs an instance of <c>PropertyExpressionPart</c>.
/// </summary>
/// <param name="nextPart">
/// The next part in the chain of parts held in the <see cref="PropertyExpression"/>.
/// </param>
protected PropertyExpressionPart(PropertyExpressionPart nextPart)
{
_nextPart = nextPart;
_object = new WeakReference(null);
}