# File lib/mocha/mock.rb, line 71
71:     def stubs(method_name_or_hash, backtrace = nil)
72:       if method_name_or_hash.is_a?(Hash) then
73:         method_name_or_hash.each do |method_name, return_value|
74:           ensure_method_not_already_defined(method_name)
75:           @expectations.add(Stub.new(self, method_name, backtrace).returns(return_value))
76:         end
77:       else
78:         ensure_method_not_already_defined(method_name_or_hash)
79:         @expectations.add(Stub.new(self, method_name_or_hash, backtrace))
80:       end
81:     end