I need help identifying the two tests for these files. I$\text{'}$m only allowed to make modifications to the java and not the @Test file::

package io$.$collective;

import java.time.Clock;

public class SimpleAgedCache $\{$

private int size; $//$add variable

public SimpleAgedCache$($Clock clock$)\{$

$\}$

public SimpleAgedCache$()\{$

$\}$

public void put$($Object key, Object value, int retentionInMillis$)\{$

size$++$; $//$Increment size

$//$ Implement storing the key$-$value pair in a data structure like an array, hashmap, or linked list.

$\}$

public boolean isEmpty$()\{$

if $($size $==0)$

return true;

else

return false;

$\}$

public int size$()\{$

return size;

$\}$

public Object get$($Object key$)\{$

$//$ Implement retrieving the value for the given key from the data structure.

return null;

$\}$

$\}$

$--------------------$

package io$.$collective;

import java.time.Clock;

public class SimpleAgedCache $\{$

private int size; $//$add variable

public SimpleAgedCache$($Clock clock$)\{$

$\}$

public SimpleAgedCache$()\{$

$\}$

public void put$($Object key, Object value, int retentionInMillis$)\{$

size$++$; $//$Increment size

$//$ Implement storing the key$-$value pair in a data structure like an array, hashmap, or linked list.

$\}$

public boolean isEmpty$()\{$

if $($size $==0)$

return true;

else

return false;

$\}$

public int size$()\{$

return size;

$\}$

public Object get$($Object key$)\{$

$//$ Implement retrieving the value for the given key from the data structure.

return null;

$\}$

$\}$