function visitBodyNode( node ) {
			if ( startCollecting && node.type === 'text' ) {
				if ( breaking.text !== '' ) {
					breaking.text += '\n';
				}
				breaking.text += node.value;
			} else if ( node.type === 'breaking-change' ) {
				startCollecting = true;
			}
		}
Callback invoked upon visiting a body node.

@private
@param {Object} node - AST node