```{index} single: YAML::PP::Schema::Catchall ``` # YAML::PP::Schema::Catchall YAML 1.2 JSON Schema ## SYNOPSIS ```perl my $yp = YAML::PP->new( schema => ['JSON'] ); my $yp = YAML::PP->new( schema => [qw/ JSON empty=str /] ); my $yp = YAML::PP->new( schema => [qw/ JSON empty=null /] ); ``` ## DESCRIPTION