anchor.diff:  skinparam shadowing false
   * SpockEngine
   ** @ResourceLock("S")\nSpecA <<write_lock>>
  -*** @ResourceLock("A")\nTestA1 <<write_lock>>
  -*** @ResourceLock("B")\nTestA2 <<write_lock>>
  +*** @ResourceLock("A")\ntestA1 <<write_lock>>
  +*** @ResourceLock("B")\ntestA2 <<write_lock>>
   @endwbs
   ....
   
  
positive.code: skinparam shadowing false
  * SpockEngine
  ** @ResourceLock("A")\n@ResourceLock("B")\n@ResourceLock("S")\nSpecA <<write_lock>>
  *** TestA1 <<samethread>>
  *** TestA2 <<samethread>>
  @endwbs
  ....
  
  
negative.code: skinparam shadowing false
  * SpockEngine
  ** SpecA
  *** testA1
  *** testA2
  ** SpecB
  *** testB1
  *** testB2
  **** testB2[1]
  **** testB2[2]
  @endwbs
  ....
  
  