1 files changed, 18 insertions, 0 deletions
diff --git a/matrix-specification/Message.php b/matrix-specification/Message.php
new file mode 100644
index 0000000..015348a
--- /dev/null
+++ b/matrix-specification/Message.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Matrix;
+
+abstract class Message implements \JsonSerializable
+{
+  public function setDefaults(): void {}
+
+  /**
+   * @return array<string, string>
+   */
+  abstract public function getBody(): array;
+
+  public function jsonSerialize(): array
+  {
+    return $this->getBody();
+  }
+}