code: public boolean addCopiedFile(File sourceFilePath, File destinationFilePath, int percentage) {
      if (null == sourceFilePath || null == destinationFilePath) {
        return false;
      }
      return copiedFiles.add(new CopiedOrMovedFile(sourceFilePath, destinationFilePath, percentage));
    }
docs: Add the information about a newly copied file in the repository for a given commit.
  
  @param sourceFilePath
  The path to the source file.
  @param destinationFilePath
  The path to the destination file.
  @param percentage
  The percentage.
  @return False if <code>sourceFilePath</code> or <code>destinationFilePath</code> is null or
  length zero. True otherwise.