The original javadoc comments has problems:

• Typo on "originial"
• Typo on "reportLinesUnWrappedchanged"
• Refers to internal code/processing logic over public API
• Can be interpreted to mean DiffRow.Tags would be absent
• Does not clearly disambiguate that reportLinesUnchanged is not a flag to omit the lines with DiffRow.Tag.EQUAL

I spent hours trying to figure out why setting reportLinesUnchanged to false still reports the lines that are unchanged. I had to go through the source code to figure out what this method was for.