append(parameters.toDeclarationString())
        append("): ")
        append(returnType.toTypeArgumentString())
        appendReproducibleNewLine(" =")
        appendReproducibleNewLine("`$name`(${parameters.toArgumentsString()})".prependIndent())
        appendReproducibleNewLine()
    }.toString()

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