# File lib/mocha/any_instance_method.rb, line 45
45:     def method_exists?(method)
46:       existing_methods = []
47:       existing_methods += stubbee.public_instance_methods(false)
48:       existing_methods += stubbee.protected_instance_methods(false)
49:       existing_methods += stubbee.private_instance_methods(false)
50:       existing_methods.any? { |m| m.to_s == method.to_s }
51:     end