code: public GitBranchResponse branch(File repositoryPath) throws IOException, JavaGitException {
      CheckUtilities.checkNullArgument(repositoryPath, "repository path");
  
      IClient client = ClientManager.getInstance().getPreferredClient();
      IGitBranch gitBranch = client.getGitBranchInstance();
      return gitBranch.branch(repositoryPath);
    }
docs: Does a basic git-branch without any options.
  
  @param repositoryPath
  A <code>File</code> instance for the path to the repository. If null is passed,
  a <code>NullPointerException</code> will be thrown.
  @return The result of the git branch.
  @throws IOException
  There are many reasons for which an <code>IOException</code> may be thrown.
  Examples include:
  <ul>
  <li>a directory doesn't exist</li>
  <li>a command is not found on the PATH</li>
  </ul>
  @throws JavaGitException
  Thrown when there is an error executing git-branch.