XACMLPolicyQueryType.DEFAULT_ELEMENT_NAME_XACML20.getLocalPart(),
XACMLPolicyQueryType.DEFAULT_ELEMENT_NAME_XACML20.getPrefix());
IssuerBuilder issuerBuilder = (IssuerBuilder) builderFactory.getBuilder(Issuer.DEFAULT_ELEMENT_NAME);
Issuer issuer = issuerBuilder.buildObject();
issuer.setValue("ISSUER_STRING");
issuer.setFormat(NameID.ENTITY);
xacmlPolicyQuery.setIssuer(issuer);
xacmlPolicyQuery.setIssueInstant(new DateTime());
xacmlPolicyQuery.setVersion(SAMLVersion.VERSION_20);