@Override
    protected String getAuthnRequestBindingType() {
        return SAMLConstants.SAML2_POST_BINDING_URI;
    }
This is {@link SAML2AuthnRequestBuilderTests}.

@author Misagh Moayyed
@since 4.0.0
pac4j-saml/src/test/java/org/pac4j/saml/sso/impl/SAML2AuthnRequestBuilderTests.java