code: func (ch *CredHub) GetById(id string) (credentials.Credential, error) {
  	var cred credentials.Credential
  
  	err := ch.makeCredentialGetByIdRequest(id, &cred)
  
  	return cred, err
  }
docs: // GetById returns a credential version by ID. The returned credential will be encoded as a map and may be of any type.