code: def priority(self):
          
          # Markers have priority set on the class
          if self.compiled_type == const.COMPILED_TYPE.MARKER:
              return self.compiled.priority
  
          # Other types have static priority
          return const.compiled_type_priorities[self.compiled_type]
docs: Get priority for this Schema.
  
          Used to sort mapping keys
  
          :rtype: int