// methods, initialization and test case as shown previously
// ...

	// Test Case: Remove an item
println 'Test Case: Remove an item'
removeItem(game, 'knife')
displayItems(game)

	// Test Case: player picks up an item
println 'Test Case: player picks up an item'
pickUpItem(game, 'apple', 'Chris')
displayItems(game)

	// Test Case: player drops an item
println 'Test Case: player drops an item'
dropItem(game, 'apple', 'Chris')
displayItems(game)

	// Test Case: Display the number of items being carried by a player
println 'Test Case: Display the number of items being carried by a player'
println "Number of items being carried by Chris: ${readNumberOfItemsBeingCarried(game, 'Chris')}\n"

	// Test Case: Display the number of carriers of an item
println 'Test Case: Display the number of carriers of an item'
println "Number of players carrying a sword: ${readNumberOfPlayersHoldingItem(game, 'sword')}\n"