.getOrPut(declaration.sinceVersion) { mutableSetOf() }
                    .add(buildIncubatingDescription(sourceFile, ktFile, declaration))
            }
        }
        return versionsToIncubating
    }

    private
    fun buildIncubatingDescription(sourceFile: File, ktFile: KtFile, declaration: KtNamedDeclaration): String {
        var incubating = "${declaration.typeParametersString}${declaration.fullyQualifiedName}"