GROOVY-9432: document how to control picocli version in CliBuilder
diff --git a/src/spec/doc/core-domain-specific-languages.adoc b/src/spec/doc/core-domain-specific-languages.adoc
index a0ed6d7..45bbe27 100644
--- a/src/spec/doc/core-domain-specific-languages.adoc
+++ b/src/spec/doc/core-domain-specific-languages.adoc
@@ -1642,6 +1642,18 @@
<6> Picocli returns the key-value pairs as a `Map`
<7> Both keys and values of the map can be strongly typed
+*Controlling the Picocli version*
+
+If necessary, you can use the `@Grab` annotation to control the version of picocli to use in `CliBuilder`.
+
+[source,groovy]
+----
+@GrabConfig(systemClassLoader=true)
+@Grab('info.picocli:picocli:4.2.0')
+import groovy.cli.picocli.CliBuilder
+
+def cli = new CliBuilder()
+----
==== ObjectGraphBuilder
