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"1" => \&get_ifc_name,

"1" => \&get_ifc_name({'ifc_default' => 'test_me',}),

"1" => { sub => \&get_ifc_name, args => {'ifc_default' => 'test_me',} 
+},

$menu_hash{1}{sub}->($menu_hash{1}{args});