srcRoot.walkTopDown().forEach { file ->
            if (file.extension == "groovy" || file.extension == "java") {
                val originalText = file.readText()
                val text = originalText.lineSequence()
                    .filterNot { it.trim().startsWith("//") }
                    .joinToString("\n")
                if (text.contains(content) && exceptions.all { !text.contains(it) }) {

                    """
                    @file:Incubating
                    package com.example

                    import org.gradle.api.Incubating

                    ${annotatedKotlinMembers.lineSequence().filter { !it.contains("Incubating") }.joinToString("\n")}

                    /** @since 2.0 */
                    const val cathedral = "cathedral"
                    """
                )
            }

    }.toString()

    private
    fun String.appendOrNull(s: String?) =
        if (s == null) null else "$this$s"

    private
    fun String.dropBlankLines(): String =
        lineSequence().filter(String::isNotBlank).joinToString("\n")

    private
    fun List<MappedApiFunctionParameter>.toDeclarationString(): String =
        takeIf { it.isNotEmpty() }?.let { list ->