title: How to identify calling method from a called method in swift
body: <p>here is a scenario </p>
  
  <pre><code>func callingMethod_A {
    self.someCalculation()
  }
  
  func callingMethod_B{
    self.someCalculation()
  }
  
  func someCalculation{
  //how to find who called this method? is it callingMethod_A or _B at runtime?
  //bla bla
  }
  </code></pre>
  
  <p>how can we get the method name that called it during run time. <br>
  thank you.</p>