function f2( x0, x1 ) { // eslint-disable-line no-unused-vars
		var args;
		var i;

		args = [];
		for ( i = 0; i < arguments.length; i++ ) {
			args.push( arguments[ i ] );
		}
		return apply( fcn, args, after, thisArg );
	}
Evaluates a function and passes the result to another function.

@private
@param {*} x0 - first argument
@param {*} x1 - second argument
@returns {*} result