code: public void setBindingsHoKSSO(Collection<String> bindingsHoKSSO) {
          if (bindingsHoKSSO == null) {
              this.bindingsHoKSSO = Collections.emptyList();
          } else {
              this.bindingsHoKSSO = bindingsHoKSSO;
          }
      }
docs: List of bindings to be included in the generated metadata for Web Single Sign-On Holder of Key. Ordering of
  bindings affects inclusion in the generated metadata.
  
  "post" (or
  "urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST").
  
  By default there are no included bindings for the profile.
  
  @param bindingsHoKSSO
  bindings for web single sign-on holder-of-key