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    Causes every method in the object's hierarchy with the given name to be
    invoked. The resulting hash is the combined set of results from all the
    methods, overlaid in top-to-bottom order (hierarchy-wise).

    "every_hash()" returns a hash in list context and a hash reference in
    scalar context.

    The cache and the optional cache override argument work like with
    "every_list()".

    Example:

      package Person;
      use base 'Data::Inherited';

      sub new {
        my $class = shift;
        my $self = bless {}, $class;
        my %args = @_;
        %args = ($self->every_hash('DEFAULTS'), %args);
        $self->$_($args{$_}) for keys %args;
        $self;
      };

      sub DEFAULTS {
        first_name => 'John',
        last_name  => 'Smith',
      };

      package Employee;
      use base 'Person';

      sub DEFAULTS {
        salary => 10_000,
      }

      package LocatedEmployee;
      use base 'Employee';

      # Note: no default for address, but different salary

      sub DEFAULTS {
        salary     => 20_000,
        first_name => 'Johan',
      }

      package main;
      my $p = LocatedEmployee->new;

      # salary: 20000
      # first_name: Johan
      # last_name: Smith

  flush_every_cache_by_key(String $key)
    Deletes the cache entry for the given key.

INSTALLATION
    See perlmodinstall for information and options on installing Perl
    modules.

BUGS AND LIMITATIONS
    No bugs have been reported.

    Please report any bugs or feature requests through the web interface at
    <http://rt.cpan.org/Public/Dist/Display.html?Name=Data-Inherited>.

AVAILABILITY
    The latest version of this module is available from the Comprehensive
    Perl Archive Network (CPAN). Visit <http://www.perl.com/CPAN/> to find a
    CPAN site near you, or see
    <http://search.cpan.org/dist/Data-Inherited/>.

    The development version lives at
    <http://github.com/hanekomu/Data-Inherited/>. Instead of sending
    patches, please fork this project using the standard git and github
    infrastructure.

AUTHOR
      Marcel Gruenauer <marcel@cpan.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2004 by Marcel Gruenauer.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.