generator-root/generator-skeletons/src/main/java/org/sklsft/generator/skeletons/commands/impl/SingleFileWriteCommand.java
protected final void writeNotOverridableContent() throws IOException {

		String content = getNotOverridableContent();

		writeLine(fileType.getSpecificCodeStartMark());
		write(content);
		writeLine(fileType.getSpecificCodeEndMark());
	}
protected final void writeNotOverridableContent() throws IOException {

		String content = getNotOverridableContent();

		writeLine(fileType.getSpecificCodeStartMark());
		write(content);
		writeLine(fileType.getSpecificCodeEndMark());
	}
appends non generated content to be kept at next generation
@throws IOException