code: public static <T> String getSoftDeleteSQL(T t, Column softDeleteColumn, List<Object> values) {
  		String setSql = getColumnName(softDeleteColumn) + "="
  	                    + softDeleteColumn.softDelete()[1];
  		return getCustomDeleteSQL(t, values, setSql);
  	}
docs: 获得软删除SQL
  @param t
  @param values
  @return