src/vs/editor/contrib/snippet/snippetParser.ts/FormatString/_toPascalCase
class FormatString:	private _toPascalCase(value: string): string {
		const match = value.match(/[a-z0-9]+/gi);
		if (!match) {
			return value;
		}
		return match.map(word => {
			return word.charAt(0).toUpperCase()
				+ word.substr(1).toLowerCase();
		})
			.join('');
	}