load_imports (Rake::Application)

          # File lib/rake.rb, line 1858
    1858:     def load_imports
    1859:       while fn = @pending_imports.shift
    1860:         next if @imported.member?(fn)
    1861:         Rake::Task[fn].invoke if Rake::Task.task_defined?(fn)
    1862:         ext = File.extname(fn)
    1863:         loader = @loaders[ext] || @default_loader
    1864:         loader.load(fn)
    1865:         @imported << fn
    1866:       end
    1867:     end