)
Replaces the substring from start to end with replacement.
Returns a new string equivalent to:
this.substring(0, start) + replacement + this.substring(end)
The start and end indices must specify a valid range of this string.
That is 0 <= start <= end <= this.length.
If end is null, it defaults to length.
Source
/**
* Replaces the substring from [start] to [end] with [replacement].
*
* Returns a new string equivalent to:
*
* this.substring(0, start) + replacement + this.substring(end)
*
* The [start] and [end] indices must specify a valid range of this string.
* That is `0 <= start <= end <= this.length`.
* If [end] is `null`, it defaults to [length].
*/
String replaceRange(int start, int end, String replacement);