public static void setUseSubjectCredsOnly(final boolean useSubjectCredsOnly) {
            LOGGER.debug("useSubjectCredsOnly is set to [{}]", useSubjectCredsOnly);
            System.setProperty(JcifsConfigConstants.SYS_PROP_USE_SUBJECT_CRED_ONLY, Boolean.toString(useSubjectCredsOnly));
        }
Sets the use subject creds only.

@param useSubjectCredsOnly the new use subject creds only
support/cas-server-support-spnego/src/main/java/org/apereo/cas/support/spnego/authentication/handler/support/JcifsConfig.java