smallrye-graphql: Cant use interface as input

When I use an interface as an input, I get an exception:

2021-09-01 16:43:53,480 ERROR [io.qua.dep.dev.IsolatedDevModeMain] (main) Failed to start quarkus: java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
	[error]: Build step io.quarkus.smallrye.graphql.deployment.SmallRyeGraphQLProcessor#buildExecutionService threw an exception: java.lang.IllegalArgumentException: Class org.acme.Eatable is used as input, but does neither have a public default constructor nor a JsonbCreator method
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code-with-quarkus-graphql.zip #939