PSR2 MethodArgumentSpacerFixer clean additional spaces

PSR2 MethodArgumentSpacerFixer clean additional spaces after a comma.
With this code one and only one space can be after a comma in a method call.

> 4.4. Method Arguments
> In the argument list, there MUST NOT be a space before each comma, and there MUST be one space after each comma.

Thanks
Also, surely better to use the isWhitespace function, and pass and array with the whitespace we want?