text: /*  Copyright 2018 Daniel Penning
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  
  #pragma once
  
  /// Define abstract tags for all supported unit types.
  /// These tags allow for a clear distinction between different BaseUnit, regardless of their actual representation.
  
  namespace LightUnits {
      struct Ampere_t;
      struct Volt_t;
      struct Ohm_t;
      struct Second_t;
  }
  