How can I remove a node and all leading comments?

[POFerro]

Hi :),

I'm trying to remove all nodes from a source file except a function and it's ascendants.
The original sourceFile looks like this:
`
export class PDVModalitiesCardsSearchModalLookupFieldComponent {

protected get ngModelValue() {
return this.keys.codigoModalidadeCard;
}
protected set ngModelValue(newValue: any) {
this.keys.codigoModalidadeCard = newValue;
}

// #region Fields from xx

/**
* Número de Meses
*/
public get numeroMeses() { return this.result.numeroMeses; }
public set numeroMeses(value: number) {
if (value !== this.result.numeroMeses) {
this.result.numeroMeses = value;
this.numeroMesesChange.emit(this.result.numeroMeses);
}
}
public numeroMesesChange = new EventEmitter();

/**
* Taxa (%)
*/
public get taxa() { return this.result.taxa; }
public set taxa(value: number) {
if (value !== this.result.taxa) {
this.result.taxa = value;
this.taxaChange.emit(this.result.taxa);
}
}
public taxaChange = new EventEmitter();

// #endregion Fields from xx

constructor(
announcer: LiveAnnouncer
, private dialog: MatDialog
, private http: HttpClient
, @self() @optional() autocomplete?: MatAutoCompleteTriggerLcfExtension<models.PDVModalitiesCardsSearchResultVM>
, @optional() @self() ngModel?: NgModel
) {
super(announcer, (searchString) => this.loadAutoComplete(searchString), autocomplete, ngModel);
}

private loadAutoComplete(searchString: string) {
return this.http.get<models.PDVModalitiesCardsSearchResultVM[]>(
'api/PDV/PDVModalitiesCardsSearchModal/AutoCompleteSearch'
, { params: { searchString: searchString } }
)
;
}

protected performLoad() {
console.log("[PDVModalitiesCardsSearchModalLookupFieldComponent][load] codigoModalidadeCard: ", this.ngModelValue);

return this.http.get<models.PDVModalitiesCardsSearchResultVM>(
  'api/PDV/PDVModalitiesCardsSearchModal/GetCurrent'
  , {
    params: this.keys as any
  }
);

}
}
`

I'm trying to leave the class only with loadAutoComplete method so the code I'm using is:
`
function composeDeltaTree(relevantNode: Node<ts.Node>) {
const parents = relevantNode.getAncestors();

const sourceFile = relevantNode.getSourceFile();
sourceFile.forEachDescendant((node, traversal) => {
if (node === relevantNode) {
console.debug("node: ", node.getKindName(), (node.compilerNode as ts.NamedDeclaration).name?.getText(), " is our relevantNode, returning it");
traversal.skip();
}
else if (!parents.includes(node) && (node as any).remove) {
console.debug("node: ", node.getKindName(), (node.compilerNode as ts.NamedDeclaration).name?.getText(), " is not in parents and is removable, cleaning it up. leading trivia", node.getLeadingCommentRanges().map(c => c.getKind() + "->" + c.getText()));
(node as any).remove();
traversal.skip();
}
else {
console.debug("node: ", node.getKindName(), (node.compilerNode as ts.NamedDeclaration).name?.getText(), " is in parents or is not removable, returning it");
}
});

return sourceFile;
}
`

Unfortunatelly the output is:
`
export class PDVModalitiesCardsSearchModalLookupFieldComponent {
// #region Fields from PDVModalitiesCardsSearchResultVM
// #endregion Fields from PDVModalitiesCardsSearchResultVM

private loadAutoComplete(searchString: string) {
return this.http.get<models.PDVModalitiesCardsSearchResultVM[]>(
'api/PDV/PDVModalitiesCardsSearchModal/AutoCompleteSearch'
, { params: { searchString: searchString } }
)
;
}
}
`

the call to remove nodes is leaving the // #region trivia, any idea why? Am I missing something? Can you help me please?
Thanks and best regards
POFerro

PS: Thanks and congrats for the lib it's amazing at making ast manipulation easy :)
PS2: Sorry for the bad formating of source code, I can't seem to get it right :D