Implement commands

app/Entity/Book.php

@@ -10,4 +10,22 @@ class Book
 {
     #[ORM\Id, ORM\Column, ORM\GeneratedValue]
     private int $id;
+
+    #[ORM\Column]
+    private string $title;
+
+    public function getId(): int
+    {
+        return $this->id;
+    }
+
+    public function getTitle(): string
+    {
+        return $this->title;
+    }
+
+    public function setTitle(string $title): void
+    {
+        $this->title = $title;
+    }
 }