Parse template parameters and part of alias template

include/cppast/cpp_template.hpp

@@ -39,6 +39,8 @@ namespace cppast
             {
             }
 
+            basic_builder(basic_builder&&) = default;
+
             /// \effects Adds a parameter.
             void add_parameter(std::unique_ptr<cpp_template_parameter> parameter)
             {
@@ -46,6 +48,12 @@ namespace cppast
                     .parameters_.push_back(*template_entity, std::move(parameter));
             }
 
+            /// \returns The not yet finished template.
+            T& get() const noexcept
+            {
+                return *template_entity;
+            }
+
             /// \effects Registers the template.
             /// \returns The finished template.
             std::unique_ptr<T> finish(const cpp_entity_index& idx, cpp_entity_id id)