extensions/markdown-language-features/src/languageFeatures/rename.ts/MdVsCodeRenameProvider/findHeaderDeclaration
class MdVsCodeRenameProvider:	private findHeaderDeclaration(references: readonly MdReference[]): MdHeaderReference | undefined {
		return references.find(ref => ref.isDefinition && ref.kind === 'header') as MdHeaderReference | undefined;
	}