Add other deprecation markers

tests/ServerTest.php

@@ -160,6 +160,9 @@ public function testSetRegistrationsReturnsSelf(): void
  );
  }
 
+ /**
+ * @deprecated
+ */
  public function testSetRegistrationsEnforcesTypeCheck(): void
  {
  $wrong = true;
@@ -181,6 +184,9 @@ public function testSetSignRequestsReturnsSelf(): void
  );
  }
 
+ /**
+ * @deprecated
+ */
  public function testSetSignRequestsEnforcesTypeCheck(): void
  {
  $wrong = true;