Visit the interpolated content of the string-like node.
def foo((bar, baz)); end ^^^^^^^^^^
Pattern
constants get wrapped in another layer of :const.
/foo #{bar}/ ^^^^^^^^^^^^
/foo #{bar}/ ^^^^^^^^^^^^
Foo += bar ^^^^^^^^^^^
Foo::Bar, = baz ^^^^^^^^
def foo(**bar); end ^^^^^
def foo(**); end ^^
Visit the targets of a multi-target node.
def foo(**nil); end ^^^^^
def foo(bar:); end ^^^^
The offset from the start of the file in code units of the given encoding.