     expectation = find_expectation(@, method_name, args...)
     throw_unknown_expectation("#{method_name}(#{args})") unless expectation?
     check_for_duplicate_expectations()
-    expectation.called = yes
+    expectation._called = yes
     throw expectation._throws if expectation._throws?
     expectation._returns
 

  throw new Error( errors ) unless errors == ""

build_all_errors = ->
  (build_not_called_error(expectation) for expectation in all_expectations when not expectation.called).join("")

build_not_called_error = (expectation) ->
  "'#{expectation._method_name}(#{expectation._args})' was never called\n"

    @_args = []
    @_returns = undefined
    @_throws = undefined
    @_called = false
    @_install_mock_method()
    all_expectations.push(@)

