this.roleCommandFromApiJsonDeserializer.validateForUpdate(command.json());
final Role role = this.roleRepository.findOne(roleId);
if (role == null) { throw new RoleNotFoundException(roleId); }
final Map<String, Object> changes = role.update(command);
if (!changes.isEmpty()) {
this.roleRepository.saveAndFlush(role);
}
return new CommandProcessingResultBuilder() //