This test verifies that textDocument/foldingRange does not panic
and produces no folding ranges if a file contains errors.
-- flags --
-ignore_extra_diags
-- a.go --
package folding //@foldingrange(raw)
// No comma.
func _(
a string
) {}
// Extra brace.
func _() {}}
-- @raw --
package folding //@foldingrange(raw)
// No comma.
func _(
a string
) {}
// Extra brace.
func _() {}}