interface definition for the library

src/main/java/org/example/scoreboard/IMatch.java

+package org.example.scoreboard;
+
+public interface IMatch {
+
+}

src/main/java/org/example/scoreboard/IScore.java

+package org.example.scoreboard;
+
+public interface IScore {
+
+}

src/main/java/org/example/scoreboard/IScoreboard.java

+package org.example.scoreboard;
+
+import java.util.ArrayList;
+
+public interface IScoreboard {
+
+  IMatch startMatch(ITeam home, ITeam away);
+
+  void finishMatch(IMatch match);
+
+  IMatch updateScore(IMatch match, IScore home, IScore away);
+
+  ArrayList<IMatch> getGameSummary();
+}

src/main/java/org/example/scoreboard/ITeam.java

+package org.example.scoreboard;
+
+public interface ITeam {
+}