@Override
    public String toString() {
        return "RawData(data = " + Arrays.toString(data) + ")";
    }
Sets the byte array that constitutes this data. This does <b>not</b> copy the given array, it simply assigns
it to this.

@param data the data to set
@return this, to allow chaining
searchlib/src/main/java/com/yahoo/searchlib/aggregation/RawData.java