public Optional<Output<Boolean>> devel() {
        return Optional.ofNullable(this.devel);
    }
@return Use chart development versions, too. Equivalent to version &#39;&gt;0.0.0-0&#39;. If `version` is set, this is ignored.
sdk/java/src/main/java/com/pulumi/kubernetes/helm/v3/ReleaseArgs.java