public void setIssuerEntityID(String issuerEntityID) {
        addAuthenticationAttribute(SAML2Authenticator.ISSUER_ID, issuerEntityID);
    }
<p>setIssuerEntityID.</p>

@param issuerEntityID a {@link String} object
pac4j-saml/src/main/java/org/pac4j/saml/profile/SAML2Profile.java