(For students familiar with XML)   Suppose a class A's purpose in life is to convert a...

(For students familiar with XML)   Suppose a class A's purpose in life is to convert an object of another class B into textual form for storage to a file.   Suppose there are 3 parts to objects of class B that we will call "var", "const", and "virtual".   Class A will convert these parts into Strings and enclose them in tags of the form <tag kind="var"> and </tag > where the kind indicates the type of part, which for our purposes we will suppose are var, const, and virtual.   These parts might also be nested.   A well-designed class A will have a method to convert each kind of part of B into a String, and then it will append those strings to finish the conversion.   Each method might look like the following:

public String convertVar() {		String result = " <tag kind=\"var\" >";		 / /...convert rest of var part of B...		result += " </tag  >";		return result;	}	public String convertConst() {		String result = " <tag kind=\"const\" >";		//...convert rest of const part of B...		result += " </tag  >";		return result;	}	public String convertVirtual() {		String result = " <tag kind=\"virtual\" >";		//...convert rest of virtual part of B...		result += " </tag  >";		return result;	}