anchor.diff:      globalMethods =
           fillTypes2(limit2: numGlobalMethods, limit1: numMethodParams);
       classFields = fillTypes2(limit2: numClasses, limit1: numLocalVars);
  +    final int numClassMethods = 1 + numClasses - classFields.length;
       classMethods = fillTypes3(classFields.length,
           limit2: numClassMethods, limit1: numMethodParams);
   
  
positive.code: // Version of DartFuzz. Increase this each time changes are made
  // to preserve the property that a given version of DartFuzz yields
  // the same fuzzed program for a deterministic random seed.
  const String version = '1.50';
  
  // Restriction on statements and expressions.
  const int stmtDepth = 1;
  
negative.code: const int numGlobalVars = 4;
  const int numLocalVars = 4;
  const int numGlobalMethods = 4;
  const int numMethodParams = 4;
  const int numClasses = 4;
  
  