IndexDefinition class is derived from TSqlStatement however it is not a statement

[IVNSTN]

Inline indices are represented in ScriptDom as instances of IndexDefinition class. These index definitions in T-SQL can only be a part of CREATE TABLE/DECLARE TABLE statement and cannot be used as separate statements.

There is also IndexStatement class which represents CREATE/ALTER/DROP INDEX statements (well, drop has a separate implementation) which are true standalone statements.

While developing code analysis, code formatting, coverage computation tools one cannot be sure that descendant of TSqlStatement class is actually a statement and has to manually exclude/ignore instances of "false-statement" classes such as IndexDefinition.

It'd be great if such expressions which cannot exist separately from a surrounding statement were not derived from TSqlStatement class.