Should I use "instance of"?

[yugeeklab]

I want to get table name from any statement.

But I found out not all statement has get table method.

Should I use "instead of" to achieve my goal?

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I found table visitor.
But I found out alterExpression is not a Expression.
There is any reason why you did like this?

[wumpz]

There is a ready to use TableNamesFinder utility class available. There are examples in the wiki.