extensions/typescript-language-features/src/languageFeatures/typeDefinitions.ts/TypeScriptTypeDefinitionProvider/provideTypeDefinition
class TypeScriptTypeDefinitionProvider:	public provideTypeDefinition(document: vscode.TextDocument, position: vscode.Position, token: vscode.CancellationToken): Promise<vscode.Definition | undefined> {
		return this.getSymbolLocations('typeDefinition', document, position, token);
	}