module T::Helpers

Except that it is statically analyzed by sorbet.

end
other.extend(mod)
def self.included(other)

Nearly equivalent to

Causes a mixin to also mix in class methods from the named module.

def mixes_in_class_methods(mod, *mods)
  Private::Mixins.declare_mixes_in_class_methods(self, [mod].concat(mods))
end