Beatriz Rodrigues
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
  public function attachDatabase(string $database): void {
  }

+  /**
+   * Returns the prefix of the tables.
+   *
+   * @return string $prefix
+   */
+  public function getPrefix() {
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
   *
   * @param string $table
   *   (optional) The table to find the prefix for.
+   *
+   * @deprecated in drupal:10.0.0 and is removed from drupal:11.0.0.
+   * Instead, you should just use Connection::getPrefix().
+   *
+   * @see https://www.drupal.org/node/3260849
   */
  public function tablePrefix($table = 'default') {
+    @trigger_error('Connection::tablePrefix() is deprecated in drupal:10.0.0 and is
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
  public function attachDatabase(string $database): void {
  }

+  /**
+   * Returns the prefix of the tables.
+   *
+   * @return string $prefix
+   */
+  public function getPrefix(): string {
--- a/core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php
    $this->assertTrue($this->connection->hasJson());
  }

+  /**
+   * Tests deprecation of ::tablePrefix().
+   *
+   * @group legacy
+   */
+  public function testDeprecatedTablePrefix() {