Custom.ReadExpression 方法

[ObsoleteAttribute("This method is not supported in X#")]
 VIRTUAL METHOD ReadExpression(
	cPropertyName
) AS STRING CLIPPER

[ObsoleteAttribute("This method is not supported in X#")]
[ClipperCallingConventionAttribute(new string[] { ... })]
public virtual string ReadExpression(
	__Usual cPropertyName = default
)