Fixing bugs of extract method refactoring

[larjean89]

What it does

• restricts the extraction of methods where multiple exits exist
• solved the issue

How to test

Run test3000, test3001 and test3002 in ExtractMethodTests

Author checklist

• I have thoroughly tested my changes
• The change is following the coding conventions
• I have signed the Eclipse Contributor Agreement (ECA)

[jjohnstn]

Hi @larjean89 I see you made some of the recommended changes. You still need to remove the binary classes in the patch, plus remove the change to the binary/.gitignore. You also inadvertently removed the copyright info for ExtractMethodTests. In addition, you will have to rebase the whole patch on recent origin/master which will have a number of conflicts in ExtractMethodAnalyzer. Do not merge master into your patch. Once you have the rebase complete use git push --force to replace your previous patches as it is likely a regular push will tell you the changes aren't forward.

[larjean89]

@jjohnstn how is this commit looking now. I have tried to address some of the issues raised. Kindly advise.

[jjohnstn]

/rebase

[jjohnstn]

/rebase

[jukzi]

the tests show 4 failed tests (AssistQuickFixTest1d8). please fix
https://ci.eclipse.org/jdt/job/eclipse.jdt.ui-github/job/PR-901/4/testReport/