createLanguageServiceSourceFile

external fun createLanguageServiceSourceFile(    fileName: String,     scriptSnapshot: IScriptSnapshot,     scriptTargetOrOptions: ScriptTarget,     version: String,     setNodeParents: Boolean,     scriptKind: ScriptKind = definedExternally): SourceFile(source)
external fun createLanguageServiceSourceFile(    fileName: String,     scriptSnapshot: IScriptSnapshot,     scriptTargetOrOptions: CreateSourceFileOptions,     version: String,     setNodeParents: Boolean,     scriptKind: ScriptKind = definedExternally): SourceFile(source)