Request.syntaxTree not found "key.serialized_syntax_tree" in Apple Silicon M2 Xcode14.3

let file = File(contents: "class A {}")
let result = try SourceKittenFramework.Request.syntaxTree(file: file, byteTree: false).send()
print(result)

apple silicon M2 xcode14.3, "key.serialized_syntax_tree" is not found in result

["key.diagnostic_stage": "source.diagnostic.stage.swift.parse"]

intel xcode14.1，is ok

["key.diagnostic_stage": "source.diagnostic.stage.swift.parse", "key.serialized_syntax_tree": "{"kind":"SourceFile","layout":[{"kind":"CodeBlockItemList","layout":[{"kind":"CodeBlockItem","layout":[{"kind":"ClassDecl","layout":[null,null,{"tokenKind":{"kind":"kw_class"},"leadingTrivia":"","trailingTrivia":" ","presence":"Present"},{"tokenKind":{"kind":"identifier","text":"A"},"leadingTrivia":"","trailingTrivia":" ","presence":"Present"},null,null,null,{"kind":"MemberDeclBlock","layout":[{"tokenKind":{"kind":"l_brace"},"leadingTrivia":"","trailingTrivia":"","presence":"Present"},{"kind":"MemberDeclList","layout":[],"presence":"Present"},{"tokenKind":{"kind":"r_brace"},"leadingTrivia":"","trailingTrivia":"","presence":"Present"}],"presence":"Present"}],"presence":"Present"},null,null],"presence":"Present"}],"presence":"Present"},{"tokenKind":{"kind":"eof","text":""},"leadingTrivia":"","trailingTrivia":"","presence":"Present"}],"presence":"Present"}"]

Start by reproducing the reported snippet through Request.syntaxTree with File(contents: "class A {}") on Apple Silicon with Xcode 14.3, then compare its result with the Intel/Xcode 14.1 output shown here. Done means determining why key.serialized_syntax_tree is absent and restoring or documenting consistent syntax-tree output for the affected environment.