EnumInstance ei = ((JL5ParsedClassType)container).enumConstantNamed(name);
EnumInstance ei = null;  if (container instanceof JL5ParsedClassType){ ei = ((JL5ParsedClassType)container).enumConstantNamed(name); }
    public Set findEnumConstants(ReferenceType container, String name) {        assert_(container);        if (container == null){            throw new InternalCompilerError("Cannot access enum constant \"" + name + "\" within a null container type.");        }        EnumInstance ei = ((JL5ParsedClassType)container).enumConstantNamed(name);        if (ei != null){            return Collections.singleton(ei);        }        Set enumConstants = new HashSet();        return enumConstants;    }