template <typename R, typename F, typename... Args>struct is_callable_r_impl
Defined at line 364 of file ../../third_party/googletest/src/googlemock/include/gmock/gmock-actions.h
Specialize the struct for those template arguments where call_result_t is
well-formed. When it's not, the generic template above is chosen, resulting
in std::false_type.