Add C# code examples to the docs

Only existing GDScript code examples are converted and added to the
docs.
This is the first batch include classes beginning with A and B.

Included classes:
 * AcceptDialog
 * AESContext
 * Animation
 * AnimationNodeStateMachine
 * AnimationNodeStateMachinePlayback
 * AnimationNodeStateMachineTransition
 * Array
 * ArrayMesh
 * AStar
 * AStar2D
 * Bool
 * Button

1 files changed, 8 insertions, 2 deletions

diff --git a/doc/classes/AnimationNodeStateMachine.xml b/doc/classes/AnimationNodeStateMachine.xml
index 9ea83d2c5e..e08e288c59 100644
--- a/doc/classes/AnimationNodeStateMachine.xml
+++ b/doc/classes/AnimationNodeStateMachine.xml
@@ -6,10 +6,16 @@
 	<description>
 		Contains multiple nodes representing animation states, connected in a graph. Node transitions can be configured to happen automatically or via code, using a shortest-path algorithm. Retrieve the [AnimationNodeStateMachinePlayback] object from the [AnimationTree] node to control it programmatically.
 		[b]Example:[/b]
-		[codeblock]
+		[codeblocks]
+		[gdscript]
 		var state_machine = $AnimationTree.get("parameters/playback")
 		state_machine.travel("some_state")
-		[/codeblock]
+		[/gdscript]
+		[csharp]
+		var stateMachine = GetNode&lt;AnimationTree&gt;("AnimationTree").Get("parameters/playback") as AnimationNodeStateMachinePlayback;
+		stateMachine.Travel("some_state");
+		[/csharp]
+		[/codeblocks]
 	</description>
 	<tutorials>
 		<link title="AnimationTree">https://docs.godotengine.org/en/latest/tutorials/animation/animation_tree.html</link>