Add note that there is no warranty or support for generator code

docs/devguide/create-metricset.asciidoc

@@ -1,6 +1,8 @@
 [[creating-metricsets]]
 === Creating a Metricset
 
+include::generator-support-note.asciidoc[tag=metricset-generator]
+
 A metricset is the part of a Metricbeat module that fetches and structures the
 data from the remote service. Each module can have multiple metricsets. In this guide, you learn how to create your own metricset.
 

docs/devguide/generator-support-note.asciidoc

@@ -0,0 +1,13 @@
+// tag::metricset-generator[]
+IMPORTANT: Elastic provides no warranty or support for the code used to generate
+metricsets. The generator is mainly offered as guidance for developers who want
+to create their own data shippers.
+
+// end::metricset-generator[]
+
+// tag::filebeat-generator[]
+IMPORTANT: Elastic provides no warranty or support for the code used to generate
+modules and filesets. The generator is mainly offered as guidance for developers
+who want to create their own data shippers.
+
+// end::filebeat-generator[]

docs/devguide/modules-dev-guide.asciidoc

@@ -1,6 +1,8 @@
 [[filebeat-modules-devguide]]
 == Creating a New Filebeat Module
 
+include::generator-support-note.asciidoc[tag=filebeat-generator]
+
 This guide will walk you through creating a new Filebeat module.
 
 All Filebeat modules currently live in the main