{"ast_node_type":"function","tokens":[{"end":77,"kind":"keyword","start":0,"text":"\"fn"}]}
            "fn f() { i$0f x == 3 && y == 1 { if z == 4 && q == 3 { 1 } } }",
            merge_nested_if,
            "fn f() { if x == 3 && y == 1 && z == 4 && q == 3 { 1 } }",