multiple exits in extenteded blocks

[KatGarmash]

get_extended_block_slices from program_slicing.decomposition.block.extension.slicing gives slice in range (3-14) (return exit and continuation of program flow)

1public String[] mapFileName(String sourceFileName) {
2       String modName = modifyName(sourceFileName);
3        if (fromPrefix == null
4            || (sourceFileName.length() < (prefixLength + postfixLength))
5            || (!fromContainsStar
6                && !modName.equals(modifyName(fromPrefix))
7                )
8            || (fromContainsStar
9                && (!modName.startsWith(modifyName(fromPrefix))
10                    || !modName.endsWith(modifyName(fromPostfix)))
11               )
12            ) {
 13           return null;
14        }
15        return new String[] {toPrefix
16                             + (toContainsStar
17                                ? extractVariablePart(sourceFileName)
18                                  + toPostfix
19                                : "")};
20    }