// *** METHODS ***
 /// <summary>
 /// Returns true if this and given PositionSpec is equal
 /// </summary>
 /// <param name="compare">Defines the PositionSpec to be compared with</param>
 /// <returns></returns>
 public bool Equals(PositionSpec compare)
 {
     return (compare.CubePosition == CubePosition && compare.FacePosition == FacePosition);
 }
        // *** METHODS ***

        /// <summary>
        /// Returns true if this and given PositionSpec is equal
        /// </summary>
        /// <param name="compare">Defines the PositionSpec to be compared with</param>
        /// <returns></returns>
        public bool Equals(PositionSpec compare)
        {
            return(compare.CubePosition == CubePosition && compare.FacePosition == FacePosition);
        }