1. generate if with curly braces when it contains single declaration inside
2. restore else branch after generating code for flatMap
3. do not reassign source variable for nested source operations
GitOrigin-RevId: 061fbcc8d8dda586dcecb9a448752709a43370da
1. add new line before and after code block braces when wrapping user code
2. add example in inspection description
3. remove OptionalToIfInspectionTest#runSingle
4. remove duplicates from operation names list
5. remove unnecessary whitespaces from strings with converted operations
6. support final variables and local variables with implicit type
7. honor operation precedence when merging two if checks during simplification
8. StringUtil#join instead of Collectors#joining
9. remove code after throw during simplification
GitOrigin-RevId: cd3273072ad3bdba21aa5b28a6fd13dc325e93ad
