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Two classes have been inserted into the hierarchies: - `NonLibraryDataFlowCallable` with a method `getACall2`. This method implements "get a call, not considering flow summaries". For `NonLibraryDataFlowCallable`s, `getACall` will defer to `getACall2`. While you could have a synthesised call to such a callable, it would not correspond to a `CallNode`. - `NonLibraryDataFlowSourceCall` with methods `getArg2` and `getCallable2`. These also refer to a call graph that does not consider flow summaries. `getArg2` is used to synthesise pre-update nodes for arguments. `getCallable2` is used in `connects` to compute argument passing. This is used to define data flow nodes for overflow arguments. `getACall2` ensures that `LibraryCallableValue::getACall` is not called when the charpred of `FunctionCall` is evaluated.