src/vs/workbench/contrib/emmet/browser/emmetActions.ts/GrammarContributions/constructor
class GrammarContributions:	constructor(contributions: ExtensionPointContribution<ITMSyntaxExtensionPoint[]>[]) {
		if (!Object.keys(GrammarContributions._grammars).length) {
			this.fillModeScopeMap(contributions);
		}
	}