code: def IsMetaMetaDict(AST):
      
      isintpair = lambda x : (isinstance(x,Tuple) and (len(x.asList()) == 2) and 
                              isctype(x.asList()[0], int) and 
                              isctype(x.asList()[1], int))
      try:
          if ((len(AST.getChildren()) > 1) and 
              isinstance(AST.getChildren()[1], Stmt)):
              if isinstance(AST.getChildren()[1].getChildren()[0], Assign):
                  [s, d] = AST.getChildren()[1].getChildren()[0].asList()
      except (TypeError, AttributeError):
          return False
      else:
          if (isinstance(s, AssName) and s.name == 'metametadata'):     
              if isinstance(d, Dict):
                  return all([isctype(k, str) and 
                              (isctype(v, int) or isintpair(v)) 
                              for (k,v) in d.items])
docs: Checks whether a given AST (abstract syntax tree) object represents a 
      metametadata dictionary.