buildMethodTopicsOn: topic for: aClass should use MDBuilder and not forge MD by hand

[Ducasse]

buildMethodTopicsOn: topic for: aClass

	| stream methodComment |
	stream := String new writeStream.
	aClass selectors asSortedCollection do: [:selector | 
		methodComment := (aClass>>selector) comment.
		addMethodsWithoutComment | methodComment notNil ifTrue: [ 
			stream 
				nextPutAll: '`';
				nextPutAll: aClass name;
				nextPutAll: '>>#';
				nextPutAll: selector asString;
				nextPutAll: '`';
				cr.		
		methodComment ifNil: [ methodComment := 'Method has no comment.' ].
		stream 
			nextPutAll: '_"'; 
			nextPutAll: methodComment; nextPutAll: '"_';cr;cr ] ].
	
	topic addNode: (MicroDownParser new parse: stream contents).