type Configuration struct {
    Version VersionSource `json:"version,omitempty"`
}

type VersionSource struct {
    Secret NamespacedName `json:"secret"`
    ConfigMap NamespacedName `json:"configMap"`
    Key string `json:"key"`
}

type NamespacedName struct {
    Name string
    Namespace string
}

func (vs *VersionSource) MarshalJSON() ([]byte, error) {

}

Write a palindrome test function
In: string
Out: true or false

aba
bb
ovavo

rune
byte

[]byte(s)

len(s)

CODE_HERE
func pal(s string)bool{
var  []
for i, v := range s{
   for y, w := range[len(s)]
}
}