defs.define_constant('Test::Unit::Assertions::AssertionMessage') do |klass|
    klass.inherits(defs.constant_proxy('Object', RubyLint.registry))
    klass.inherits(defs.constant_proxy('Test::Unit::Util::BacktraceFilter', RubyLint.registry))

    klass.define_method('convert') do |method|