diff --git a/go/vendor/github.com/go-openapi/runtime/middleware/denco/util.go b/go/vendor/github.com/go-openapi/runtime/middleware/denco/util.go
new file mode 100755
index 0000000..edc1f6a
--- /dev/null
+++ b/go/vendor/github.com/go-openapi/runtime/middleware/denco/util.go
@@ -0,0 +1,12 @@
+package denco
+
+// NextSeparator returns an index of next separator in path.
+func NextSeparator(path string, start int) int {
+	for start < len(path) {
+		if c := path[start]; c == '/' || c == TerminationCharacter {
+			break
+		}
+		start++
+	}
+	return start
+}