TypeError in typeassert, expected

New to Julia
7

I think the author is referencing another thread where MethodError’s “closest candidates” list does not show field names:

julia> struct TEST_STRUCT; A; B end

julia> TEST_STRUCT(1)
ERROR: MethodError: no method matching TEST_STRUCT(::Int64)
The type `TEST_STRUCT` exists, but no method is defined for this combination of argument types when trying to construct it.

Closest candidates are:
  TEST_STRUCT(::Any, ::Any)
   @ Main REPL[131]:1

Stacktrace:
 [1] top-level scope
   @ REPL[132]:1

julia> methods(TEST_STRUCT) # me checking that default constructors have field names
# 1 method for type constructor:
 [1] TEST_STRUCT(A, B)
     @ REPL[131]:1

That might be a helpful addition.