code: public String retrieveBranch() throws MojoExecutionException {
  		try {
  			return getRepository().getBranch();
  		} catch (IOException e) {
  			throw new MojoExecutionException(e.getClass().getSimpleName(), e);
  		}
  	}
docs: <p>
  retrieveBranch.
  </p>
  
  @throws org.apache.maven.plugin.MojoExecutionException
  if any.
  @return a {@link java.lang.String} object.