@Override protected void validateExtras(ValidationContext validationContext) { if (!StringUtil.isBlank(scmId)) { SCM scm = validationContext.findScmById(scmId); if (scm == null) { addError(SCM_ID, String.format("Could not find SCM for given scm-id: [%s].", scmId)); } else if (!scm.doesPluginExist()) { addError(SCM_ID, String.format("Could not find plugin for scm-id: [%s].", scmId)); } } }