NAME
GraphQL::Houtou::Type::Interface - GraphQL interface type
SYNOPSIS
my $Node = GraphQL::Houtou::Type::Interface->new(
name => 'Node',
fields => { id => { type => $ID->non_null } },
resolve_type => sub { my ($value) = @_; $value->{kind} },
);DESCRIPTION
An abstract output type. resolve_type receives the resolved value and returns the concrete object type name; alternatively implementing types may define is_type_of. Objects declare membership through their interfaces list, and concrete types reachable only through an interface must be listed in the schema's types.