tracker issue : CF-4198396

Please support the popular "arrow function" syntax for declaring closures.  Please copy the precedent already set by Lucee Server.  This is documented here:
http://docs.lucee.org/guides/lucee-5/lambda.html

It basically works like this:

Simple lambda with no arguments


{code:java}
// Using a traditional function
makeSix = function() { return 5 + 1; }

// Using a lambda expression
makeSix = () => 5 + 1;

Simple lambda with arguments:

// Takes two numeric values and adds them
add = (numeric x, numeric y) => x + y;

Another example with an argument:

// Takes a numeric value and returns a string
isOdd = (numeric n) => {
  if ( n % 2 == 0 ) {
    return 'even';
  } else {
    return 'odd';
  }
};
{code}

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