fails(JRUBY-5660):Kernel#singleton_methods when not passed an argument returns a unique list for an object extended with a module
fails(JRUBY-5660):Kernel#singleton_methods when not passed an argument returns a unique list for a subclass
fails(JRUBY-5660):Kernel#singleton_methods when not passed an argument returns a unique list for a subclass including a module
fails(JRUBY-5660):Kernel#singleton_methods when passed true returns a unique list for an object extended with a module
fails(JRUBY-5660):Kernel#singleton_methods when passed true returns a unique list for a subclass
fails(JRUBY-5660):Kernel#singleton_methods when passed true returns a unique list for a subclass including a module
