title: Check existing services in local GATT Profile
body: <p>I’m developing an iOS app as a ‘Peripheral’, where services are added to ‘PeripheralManager’. Is there a way to check what services exists at a later time? </p>
  
  <p>Use case: let’s say I’m about to start advertising and want to make sure my ‘CustomService’ exists in local ‘GATT Profile’ and will be discoverable to the ‘central’. </p>
  
  <p>How can I check this programmatically? </p>