code: func (ch *CredHub) SetRSA(name string, value values.RSA) (credentials.RSA, error) {
  	var cred credentials.RSA
  	err := ch.setCredential(name, "rsa", value, &cred)
  
  	return cred, err
  }
docs: // SetRSA sets an RSA credential with a user-provided value.