public bool IsUndefined() { return(JSApi.JS_IsUndefined(this)); }
public bool IsNullish() { return(JSApi.JS_IsNull(this) || JSApi.JS_IsUndefined(this)); }
public bool IsUndefined() { return(JSApi.JS_IsUndefined(this)); }
public bool IsNullish() { return(JSApi.JS_IsNull(this) || JSApi.JS_IsUndefined(this)); }