Assert.isNotNull(fNlsHolder.getSubstitutions());
Assert.isNotNull(fSubstitutions);
    private void checkParameters() {        Assert.isNotNull(fNlsHolder.getSubstitutions());        Assert.isNotNull(fAccessorPackage);        Assert.isNotNull(fPropertyFilePath);        Assert.isNotNull(fNlsHolder.getLines());        // these values have defaults ...        Assert.isNotNull(fAccessorClassName);        Assert.isNotNull(fSubstitutionPattern);    }