126                 None | Some(Bool) | Some(Char) | Some(U8) | Some(U16) | Some(U32) | Some(U64)  in check_type_rust_vec()
127                 | Some(Usize) | Some(I8) | Some(I16) | Some(I32) | Some(I64) | Some(Isize)  in check_type_rust_vec()
128                 | Some(F32) | Some(F64) | Some(RustString) => return,  in check_type_rust_vec()
129                 Some(CxxString) => {}  in check_type_rust_vec()
147             None | Some(CxxString) => return,  in check_type_unique_ptr()
165             None | Some(Bool) | Some(U8) | Some(U16) | Some(U32) | Some(U64) | Some(Usize)  in check_type_shared_ptr()
166             | Some(I8) | Some(I16) | Some(I32) | Some(I64) | Some(Isize) | Some(F32)  in check_type_shared_ptr()
167             | Some(F64) | Some(CxxString) => return,  in check_type_shared_ptr()
168             Some(Char) | Some(RustString) => {}  in check_type_shared_ptr()
186             None | Some(Bool) | Some(U8) | Some(U16) | Some(U32) | Some(U64) | Some(Usize)  in check_type_weak_ptr()
187             | Some(I8) | Some(I16) | Some(I32) | Some(I64) | Some(Isize) | Some(F32)  in check_type_weak_ptr()
188             | Some(F64) | Some(CxxString) => return,  in check_type_weak_ptr()
189             Some(Char) | Some(RustString) => {}  in check_type_weak_ptr()
210             None | Some(U8) | Some(U16) | Some(U32) | Some(U64) | Some(Usize) | Some(I8)  in check_type_cxx_vector()
211             | Some(I16) | Some(I32) | Some(I64) | Some(Isize) | Some(F32) | Some(F64)  in check_type_cxx_vector()
212             | Some(CxxString) => return,  in check_type_cxx_vector()
213             Some(Char) => { /* todo */ }  in check_type_cxx_vector()
214             Some(Bool) | Some(RustString) => {}  in check_type_cxx_vector()
223         if let Some(requires_pin) = match &ty.inner {  in check_type_ref()
225                 Some(ident.rust.to_string())  in check_type_ref()
227             Type::CxxVector(_) => Some("CxxVector<...>".to_owned()),  in check_type_ref()
322         if let Some(ety) = cx.types.untrusted.get(&name.rust) {  in check_api_struct()
394     if let Some(reasons) = cx.types.required_trivial.get(&ety.name.rust) {  in check_api_type()
425     if let Some(receiver) = &efn.receiver {  in check_api_fn()
481     if let Some(ty) = &efn.ret {  in check_api_fn()
510     if let Some(negative) = imp.negative_token {  in check_api_impl()
542         Some(Type::Ref(ty)) if ty.mutable => {}  in check_mut_return_restriction()
543         Some(Type::SliceRef(slice)) if slice.mutable => {}  in check_mut_return_restriction()
547     if let Some(receiver) = &efn.receiver {  in check_mut_return_restriction()
552             Some(resolve) => resolve,  in check_mut_return_restriction()
572                         Some(resolve) => !resolve.generics.lifetimes.is_empty(),  in check_mut_return_restriction()
711             } else if Atom::from(&ident.rust) == Some(CxxString) {  in describe()
713             } else if Atom::from(&ident.rust) == Some(Char) {  in describe()