Call shared steps within a test and at execution, include the detail of the shared steps.

We need a method by which a step or series of steps can be written once and called from multiple tests. For example, I want to write a login procedure and then call it from other tests. Specifically, I want to have a test step something like “Call ‘Login’”. At execution, this step would be replaced by the steps in the test called “Login”. I do not want to copy the steps (as we do now), because then I have to maintain those steps in many places.