code: @BetaApi
    public final SslPoliciesListAvailableFeaturesResponse listAvailableFeaturesSslPolicies(
        ProjectName project) {
  
      ListAvailableFeaturesSslPoliciesHttpRequest request =
          ListAvailableFeaturesSslPoliciesHttpRequest.newBuilder()
              .setProject(project == null ? null : project.toString())
              .build();
      return listAvailableFeaturesSslPolicies(request);
    }
docs: Lists all features that can be specified in the SSL policy when using custom profile.
  
  <p>Sample code:
  
  <pre><code>
  try (SslPolicyClient sslPolicyClient = SslPolicyClient.create()) {
  ProjectName project = ProjectName.of("[PROJECT]");
  SslPoliciesListAvailableFeaturesResponse response = sslPolicyClient.listAvailableFeaturesSslPolicies(project);
  }
  </code></pre>
  
  @param project Project ID for this request.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails