static parseAppTicket(ticket, allowInvalidSignature) {
		return AppTicket.parseAppTicket(ticket, allowInvalidSignature);
	}
Parse a Steam app or session ticket and return an object containing its details. Static.
@param {Buffer|ByteBuffer} ticket - The binary appticket
@param {boolean} [allowInvalidSignature=false] - Pass true to get back data even if the ticket has no valid signature.
@returns {object|null} - object if well-formed ticket (may not be valid), or null if not well-formed