=begin pod

=TITLE class X::Method::Private::Permission

    class X::Method::Private::Permission does X::Comp { }

Compile time error thrown when the code contains a call to a private method
that isn't defined in the current class, and when no appropriate trusts
relation is defined that permits the private method call.

For example the code

    1!Int::foo

dies with

    ===SORRY!===
    Cannot call private method 'foo' on package Int because it does not trust GLOBAL

=head1 Methods

=head2 method

    method method() returns Str:D

The name of the private method

=head2 source-package

    method source-package() returns Mu:D

Returns the type object that (supposedly) contains the private method.

=head2 calling-package

    method calling-package() returns Mu:D

Returns the package in which the calling code is, and which the source package
does not trust.

=end pod