ext.mergeDefinitions = { String definitionsInputDir, String definitionsOutputPath ->
	def merged = new File(definitionsOutputPath)
	merged.delete()

	boolean isFirst = true
	fileTree(dir: definitionsInputDir).getFiles().each { file ->
		if (!file.isFile() || !file.name.endsWith(".yml")) {
			return
		}

		if (isFirst) {
			isFirst = false
		} else {
			merged << "\n---\n"
		}

		merged << file.text
			.replaceAll("\\s*#[^\n]+", "")
			.replaceAll("^[ ]+\n", "")
			.trim()
	}
}