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7. Assuming that the said file is empty, what modifications do you need to make in order for Git to ignore any class' file? YOUR ANSWER GOES HERE 8. You've written your very first test named ShouldSortByD2F.java, what are the Git commands that will reflect your changes in the testing branch in the REMOTE repository named 'origin'? YOUR ANSWER GOES HERE 9. Satisfied with what you did on the first day, you turned off your computer and went back home. Meanwhile, Gary, another member on your team, pushed some changes to the 'core' branch in the remote repository, which include new classes to be tested What is a single Git command that will keep your current branch up-to-date with the changes made to the 'core' branch on the remote repository? YOUR ANSWER GOES HERE 10. The previous command is effectively the same as sequentially executing which two Git commands? YOUR ANSWER GOES HERE 11. We made some changes to fix a bug for ShouldSortByD2F.java and we now want to commit them. Hence, we enter: git add ShouldSortByD2F.java git commit -m -@~\fixed a bug with ShouldSortByD2F.java -0-1 Uh oh! We now realize that the fix was not a fix after all! It actually broke the program. We should have tested it before committing. However, you also know there is a git command to UNDO this commit. What is a single git command to undo the commit above? YOUR ANSWER GOES HERE