void foo(int a) {}
foo(0);
----------------------------------------------------
[
["keyword", "void"],
["function", "foo"],
["punctuation", "("],
["variable", "int"],
["variable", "a"],
["punctuation", ")"],
["punctuation", "{"],
["punctuation", "}"],
["function", "foo"],
["punctuation", "("],
["number", "0"],
["punctuation", ")"],
["punctuation", ";"]
]
----------------------------------------------------
Checks for functions.