propertyNames.mapNotNull { propertyName ->
        stringPropertyOrNull(propertyName)?.let { propertyValue ->
            propertyName to propertyValue
        }
    }.toMap()


/**
 * Creates a [Provider] that returns `true` when this [Provider] has a value
 * and `false` otherwise. The returned [Provider] always has a value.
 * @see Provider.isPresent
 */
private

                    performanceTestType to (entry.value as JSONArray).map {
                        Os.valueOf((it as String).uppercase(Locale.US))
                    }.toSet()
                }.toMap()
                PerformanceTestGroup(testProject, coverage)
            }
            PerformanceTestConfiguration(testId, groups)
        }
    }
}

private