/// <summary>
        /// 发现。
        /// </summary>
        /// <param name="shapeType">形状类型。</param>
        /// <returns>形状候补建造器。</returns>
        public ShapeAlterationBuilder Describe(string shapeType)
        {
            var alterationBuilder = new ShapeAlterationBuilder(_feature, shapeType);

            _alterationBuilders.Add(alterationBuilder);
            return(alterationBuilder);
        }
 /// <summary>
 /// 发现。
 /// </summary>
 /// <param name="shapeType">形状类型。</param>
 /// <returns>形状候补建造器。</returns>
 public ShapeAlterationBuilder Describe(string shapeType)
 {
     var alterationBuilder = new ShapeAlterationBuilder(_feature, shapeType);
     _alterationBuilders.Add(alterationBuilder);
     return alterationBuilder;
 }