code: public void setBindingsSLO(Collection<String> bindingsSLO) {
          if (bindingsSLO == null) {
              this.bindingsSLO = Collections.emptyList();
          } else {
              this.bindingsSLO = bindingsSLO;
          }
      }
docs: List of bindings to be included in the generated metadata for Single Logout. Ordering of bindings affects
  inclusion in the generated metadata.
  
  Supported values are: "post" (or "urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST") and "redirect" (or
  "urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect").
  
  The following bindings are included by default: "post", "redirect"
  
  @param bindingsSLO
  bindings for single logout