Welcome to creative developers circus.
Instead of respecting all 'legal/reasonable' way to code at the beginning,
try intuition, above all if it is important and new for you and if no sample around looks like you want:

Welcome to creative developers circus.

• Write with your instinct, from things you already know, not with your mental and imagination.
  
• And stop.
  
• Take a magnifying glass and inspect all words you write : You write "text" because "text" is near to String, but "verb", "adjective" or something more accurate is needed, read again and adjust method with new sense
  ... or, you wrote a piece of code thinking about future? remove it
  
• Correct, do other task (sport, culture or other things outside business), come back and read again.
  
• All fit well, pass to UML
  
• Correct, do other task, come back and read again.
  
• All fit well, pass to TDD
  
• Now all is correct, good
  
• Try benchmark to point out things to be optimized, do it.
  
  What's appear :
  
• you wrote a code respecting all rules
  
• you get an experience, a new way for work,
  
• something change in your mind, you'll never afraid by new configuration.
  
  And now, if you see an UML looking like the above, you will be able to say
  "Boss, I begin by TDD for this...."
  it is another new thing ?
  "Boss, I would try something before decide the way I'll code.."
  
  Best regards from PARIS
  Claude