Added basic StructuredContent and error passing

Author: ineersa

src/Schema/Content/StructuredContent.php

@@ -13,6 +13,9 @@
 
 class StructuredContent extends Content
 {
+    /**
+     * @param mixed[] $data
+     */
     public function __construct(
         private array $data = [],
     ) {

src/Schema/Result/CallToolResult.php

@@ -81,7 +81,7 @@ public static function error(array $content, ?StructuredContent $structuredConte
     }
 
     /**
-     * @param array<int, TextContentData|ImageContentData|AudioContentData|EmbeddedResourceData|StructuredContent> $data
+     * @param array<int, TextContent|ImageContent|AudioContent|EmbeddedResource|StructuredContent> $data
      */
     public static function fromArray(array $data): self
     {
@@ -97,7 +97,7 @@ public static function fromArray(array $data): self
                 $structuredContent = $item;
                 continue;
             }
-            $contents[] = match ($item->type ?? null) {
+            $contents[] = match ($item->type) {
                 // TODO this should be enum, also `resource_link` missing.
                 // We shouldn't rely on user input for type and just use instanceof instead
                 'text', 'audio', 'image', 'resource' => $item,
@@ -114,8 +114,8 @@ public static function fromArray(array $data): self
 
     /**
      * @return array{
-     *     content: array<TextContent|ImageContent|AudioContent|EmbeddedResource>,
-     *     structuredContent?: StructuredContent,
+     *     content: array<TextContentData|ImageContentData|AudioContentData|EmbeddedResourceData>,
+     *     structuredContent?: mixed[],
      *     isError: bool,
      * }
      */