objname - returns the name of the given global obj, if present
oadl::objname(obj)
The objname() function performs an inverse
lookup on the global symbol table to find the name associated with
the given obj. This is primarily useful for debugging or for
introspection.
Returns a string containing the name of the global object if
found. If the object is not found in the global symbol table, it
returns nil.
ArgCheck is thrown if exactly one argument is
not provided.
"My name is ", oadl::objname(main), '\n';