Custom MenuItem on Animator graph

Is it possible to write a custom MenuItem to be used on Animator graphs? Something like:

Code (CSharp):

1. [ MenuItem( "CONTEXT/AnimatorState/Remove All Transitions" ) ]
2. private static void RemoveAllTransitions( MenuCommand command )
3. {
4.     // Transition removal logic here
5. }

Or

Code (CSharp):

1. [ MenuItem( "CONTEXT/AnimatorControllerLayer/Remove Invalid Transitions" ) ]
2. private static void RemoveInvalidTransitions( MenuCommand command )
3. {
4.     // Removes transitions without exit time or conditions
5. }