=begin pod

=TITLE class X::Attribute::NoPackage

    class X::Attribute::NoPackage does X::Comp { }

Compile time error thrown when an attribute is declared where it does
not make sense (for example in the mainline).

For example

    has $.x;

Dies with

    ===SORRY!===
    You cannot declare attribute '$.x' here; maybe you'd like a class or a role?

=head1 Methods

=head2 name

    method name() returns Str:D

Returns the name of the attribute

=end pod