code: func (ms modelSpec) fieldRedisNames() []string {
  	names := make([]string, len(ms.fields))
  	count := 0
  	for _, field := range ms.fields {
  		names[count] = field.redisName
  		count++
  	}
  	return names
  }
docs: // fieldRedisNames returns all the redis names (which might be custom names specified via
  // the `redis:"custonName"` struct tag) for each field in the given modelSpec