/**
* @param array $data
*
* @return Message
*/
public function enrichMetadata(array $data)
{
$metadata = $this->metadata->mergeWith($data);
return new self($this->identifier, $this->payload, $metadata);
}
public function testCanBeMergedWithAdditionalData()
{
$additionalData = ['key2' => 'new_value', 'key3' => 'value3'];
$metadata = $this->metadata->mergeWith($additionalData);
$this->assertEquals(['key1' => 'value1', 'key2' => 'new_value', 'key3' => 'value3'], $metadata->all());
}