text: ////////////////////////////////////////////////////////////////////////////////
  /// DISCLAIMER
  ///
  /// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
  /// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
  ///
  /// 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.
  ///
  /// Copyright holder is ArangoDB GmbH, Cologne, Germany
  ///
  /// @author Dr. Frank Celler
  ////////////////////////////////////////////////////////////////////////////////
  
  #ifndef ARANGODB_RANDOM_UNIFORM_CHARACTER_H
  #define ARANGODB_RANDOM_UNIFORM_CHARACTER_H 1
  
  #include "Basics/Common.h"
  
  namespace arangodb {
  class UniformCharacter {
   private:
    UniformCharacter(UniformCharacter const&);
    UniformCharacter& operator=(UniformCharacter const&);
  
   public:
    explicit UniformCharacter(size_t length);
    explicit UniformCharacter(std::string const& characters);
    UniformCharacter(size_t length, std::string const& characters);
  
   public:
    std::string random();
    std::string random(size_t length);
  
   private:
    size_t _length;
    std::string const _characters;
  };
  }
  
  #endif
  