fix: change postData field type to Object (#296)

tools/api-generator/src/main/java/com/microsoft/playwright/tools/ApiGenerator.java

@@ -289,6 +289,9 @@ class TypeRef extends Element {
 
   private JsonObject stripNullable() {
     JsonObject jsonType = jsonElement.getAsJsonObject();
+    if (!isNullable()) {
+      return jsonType;
+    }
     if (!jsonType.has("union")) {
       return jsonType;
     }
@@ -696,12 +699,6 @@ class Field extends Element {
         }
       }
     }
-    if ("Route.resume.options.postData".equals(jsonPath)) {
-      output.add(offset + "public " + parentClass + " withPostData(String postData) {");
-      output.add(offset + "  this.postData = postData.getBytes(StandardCharsets.UTF_8);");
-      output.add(offset + "  return this;");
-      output.add(offset + "}");
-    }
     writeGenericBuilderMethod(output, offset, parentClass, type.toJava());
   }
 

tools/api-generator/src/main/java/com/microsoft/playwright/tools/Types.java

@@ -50,9 +50,6 @@ class Types {
     add("BrowserContext.exposeFunction.callback", "function", "FunctionCallback");
     add("Page.exposeBinding.callback", "function", "BindingCallback");
     add("Page.exposeFunction.callback", "function", "FunctionCallback");
-
-    // The method has custom signatures
-    add("Route.resume.options.postData", "Buffer|string", "byte[]", new Empty());
   }
 
   Mapping findForPath(String jsonPath) {