julia> which(Core.Compiler.is_pure_intrinsic_infer, (Core.IntrinsicFunction,)).sig
Tuple{typeof(Core.Compiler.is_pure_intrinsic_infer), Core.IntrinsicFunction} # good
julia> which(Core.Compiler.is_pure_intrinsic_infer, (Core.IntrinsicFunction,)).sig |> Core.println
Tuple{typeof(Core.Compiler.is_pure_intrinsic_infer), typeof(Core.IntrinsicFunction)} # bad
julia> Core.IntrinsicFunction.name
typename(Core.IntrinsicFunction) # good
julia> Core.IntrinsicFunction.name.name
:IntrinsicFunction # good
julia> Core.IntrinsicFunction.name.mt.name
:IntrinsicFunction # bad
