src/vs/workbench/contrib/languageStatus/browser/languageStatus.contribution.ts/EditorStatusContribution/_severityToSingleCodicon
class EditorStatusContribution:	private static _severityToSingleCodicon(sev: Severity): string {
		switch (sev) {
			case Severity.Error: return '$(error)';
			case Severity.Warning: return '$(info)';
			default: return '$(check)';
		}
	}