src/vs/workbench/services/textfile/common/textFileEditorModel.ts/TextFileEditorModel/registerListeners
class TextFileEditorModel:	private registerListeners(): void {
		this._register(this.fileService.onDidFilesChange(e => this.onDidFilesChange(e)));
		this._register(this.filesConfigurationService.onFilesAssociationChange(() => this.onFilesAssociationChange()));
	}