UnityEngine.GeometryUtility.CalculateFrustumPlanes C# (CSharp) Method

        public static Plane[] CalculateFrustumPlanes(Camera camera)
        {
            return CalculateFrustumPlanes(camera.projectionMatrix * camera.worldToCameraMatrix);
        }

 public static void CalculateFrustumPlanes(Camera camera, Plane[] planes)
 {
     GeometryUtility.CalculateFrustumPlanes(camera.projectionMatrix * camera.worldToCameraMatrix, planes);
 }