#[cfg(feature = "test")]
#[doc = "test docs"]
impl Container<()> {
    #[inline]
    #[cfg(feature = "extra-test")]
    #[doc = "test method docs"]
    fn test_method() {}
}
#[cfg(feature = "test")]
#[doc = "test docs"]
impl<TestMember0> Container<(TestMember0,)> {
    #[inline]
    #[cfg(feature = "extra-test")]
    #[doc = "test method docs"]
    fn test_method() {}
}