// EXPLAIN (wash): Retrieve a numeric utree as an integral/floating point
  // type. Symbol utrees will return either a Karma (in the future,
  // construe_cast) converted value, or throw conversion_error/assertion.
  // Container utrees will also throw/assert.
  template<class T>
    typename enable_if<is_integral<T>, boost::intmax_t>::type get (void) const;
  template<class T>
    typename enable_if<is_floating_point<T>, double>::type get (void) const;
  // EXPLAIN (wash): Retrieve a symbol utree as an string. If the utree is
  // a numeric, the value of the utree is converted to a string (using Karma;
  // in the future it should use construe_cast, once construe_cast is added to
  // Boost). If the utree is a sequence, conversion_error is thrown/assertion
  // will occur. Record utrees will exhibit user-defined behavior.
  template<class T>
    typename enable_if<is_same<T, std::string>, std::string>::type
    get (void) const;
  template<class T>
    typename enable_if<is_same<T, char const*>, char const*>::type
    get (void) const;
  // EXPLAIN (wash): Get a sequence utree as an arbitrary STL Container with
  // value_type utree. If the utree is not a sequence, return an instance of
  // said arbitrary STL Container with the current utree as it's only element.
  // This is only useful if you need repeated random access to a sequence utree
  // (aka enough random access that it's cheaper to copy the sequence to a
  // dynamic array first). This will be used for the utree to client AST
  // translation framework.
  template<class T>
    typename enable_if<is_class<T>, T>::type get (void) const;