Generate Kotlin source by IDEA Plugin

I am writing an IDEA plug-in to generate data classes by json.I've done some work, but I don't know how to generate kotlin source files.

I learned about PsiFile. So I can create new Kotlin File, but I don't know how to inflate code to file.

This is my ”build.gradle.kts“(added kotlin dependence):

intellij {
    version.set("2023.1.5")
    type.set("IC") // Target IDE Platform

    //plugins.set(listOf(/* Plugin Dependencies */))
    plugins.set(listOf("com.intellij.java","org.jetbrains.kotlin"))
}

I tried kotlinpoet, But the generated code has a lot of redundancy.

So I think maybe I should use KtPsiFactory, and i tried use it, But I can't generate documentation comments using KtPsiFactory.

This is my code about KtPsiFactory:

val factory: KtPsiFactory = KtPsiFactory(event.project!!)
            
            val ktFile: KtFile = factory.createFile(classNameField.text + ".kt", "package $packageName")

            ktFile.add(factory.createNewLine())

            val ktClass: KtClass = factory.createClass("class ${classNameField.text}")

            val ktClassBody: KtClassBody = ktClass.getOrCreateBody()
            ktClassBody.addBefore(factory.createNewLine(), ktClassBody.rBrace)
            
            val dataClassOne: KtClass = factory.createClass("data class DataOne")
            dataClassOne.createPrimaryConstructorParameterListIfAbsent().apply {
                add(factory.createNewLine())
                addParameter(factory.createParameter("var id:Long"))
                    .let {
                        it.add(factory.createComment("this is id")) // This throw NoSuchElementException
                        it.addAnnotationEntry(
                            factory.createAnnotationEntry("@SerializedName(\"id\")")
                                .apply { add(factory.createNewLine()) })
                    }
                addParameter(factory.createParameter("var name:String"))
            }
            
            ktClassBody.addBefore(dataClassOne, ktClassBody.rBrace)
            
            ktFile.add(ktClass)
            ApplicationManager.getApplication().runWriteAction {
                directory.add(ktFile)
            }

Can anyone tell me how to use KtPsiFactory ? or where is the documentation about KtPsiFactory?

Thanks to everyone who helped