Import Upstream version 4.12.4

doc/api/schema.md

@@ -0,0 +1,22 @@
+[//]: # (THE CONTENT BELOW IS GENERATED. DO NOT EDIT.)
+# schema
+Store and provide schema for commands and topics
+
+### Arguments
+No arguments.
+
+### Options
+* known_fingerprints : :ref:`Str<Str>`
+* version : :ref:`Str<Str>`
+
+### Output
+|Name|Type
+|-|-
+|result|Output
+
+[//]: # (ADD YOUR NOTES BELOW. THESE WILL BE PICKED EVERY TIME THE DOCS ARE REGENERATED. //end)
+### Semantics
+
+### Notes
+
+### Version differences