Autopkg recipe override with custom processor

Abstract.pkg.recipe

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Identifier</key>
	<string>local.pkg.Abstract</string>
	<key>Input</key>
	<dict>
		<key>NAME</key>
		<string>Abstract</string>
	</dict>
	<key>ParentRecipe</key>
	<string>com.github.dataJAR-recipes.pkg.Abstract</string>
	<key>ParentRecipeTrustInfo</key>
	<dict>
		<key>non_core_processors</key>
		<dict/>
		<key>parent_recipes</key>
		<dict>
			<key>com.github.dataJAR-recipes.download.Abstract</key>
			<dict>
				<key>git_hash</key>
				<string>307367f4291653873cb643e1a37660a7a919b716</string>
				<key>path</key>
				<string>~/Library/AutoPkg/RecipeRepos/com.github.autopkg.dataJAR-recipes/Abstract/Abstract.download.recipe</string>
				<key>sha256_hash</key>
				<string>b9dfab745c6a08c79d6b7d9f8d62dd813a29b368503e065f80ccb859a5fe2ba8</string>
			</dict>
			<key>com.github.dataJAR-recipes.pkg.Abstract</key>
			<dict>
				<key>git_hash</key>
				<string>6e3ce6ea55174a82101f629b0e0903b0510d4486</string>
				<key>path</key>
				<string>~/Library/AutoPkg/RecipeRepos/com.github.autopkg.dataJAR-recipes/Abstract/Abstract.pkg.recipe</string>
				<key>sha256_hash</key>
				<string>87c341b82ba7654083e19c7b5cac31fe5a7466b0a6b75d591fdf8228891d91bb</string>
			</dict>
		</dict>
	</dict>
	<key>Process</key>
	<array>
		<dict>
			<key>Arguments</key>
			<dict>
				<key>pkg_path</key>
				<string>%RECIPE_CACHE_DIR%/%NAME%-%version%.pkg</string>
			</dict>
			<key>Processor</key>
			<string>JPCImporter</string>
		</dict>
	</array>
</dict>
</plist>