code: public IType verifyTypesComparable( IType lhsType, IType rhsType, boolean bBiDirectional ) throws ParseException
    {
      return verifyTypesComparable( lhsType, rhsType, bBiDirectional, null );
    }
docs: private TypeSystemAwareCache<TypesComp, IType> getCompCache() { return _compCache; }