code: public <T> T runUnchecked(Retryable<T> operation) throws RuntimeException
  	{
  		try
  		{
  			return run(operation);
  		}
  		catch (RuntimeException e)
  		{
  			throw e;
  		}
  		catch (Exception e)
  		{
  			throw new RuntimeException("Retryable " + operation + " failed: " + e.getMessage(), e);
  		}
  	}
docs: Run the operation, only throwing an unchecked exception on failure
  
  @param operation
  @param <T>
  
  @return
  
  @throws RuntimeException