Foo::Bar ^^^^^^^^
“foo #{bar}” ^^^^^^^^^^^^
:“foo #{bar}” ^^^^^^^^^^^^^
‘foo #{bar}` ^^^^^^^^^^^^
Visit the list of statements of a statements node. We support nil statements in the list. This would normally not be allowed by the structure of the prism parse tree, but we manually add them here so that we can mirror Ripper’s void stmt.
Interpolate substitution vars in the arg (i.e. $(DEFFILE))