* Create a String made up of just the first two letters. Hashtags are used if * there are not enough letters. *

 * firstTwoCharacters ("superman") -> "su" * firstTwoCharacters ("e") -> "e#" * firstTwoCharacters ("") -> "## * 

* * * @param phrase != null * @return the first two letters, or hashtags if there's not enough letters for that. * */ public static String firstTwoCharacters (String phrase) return "TODO: Write the body of this method so the test passes