Alter source entity info

Available since: 1.0.0

Provided tokens

Token	Description
[event]	The event.
[event:webform]	The webform.
[event:webform:access_rules]	The access rules.
[event:webform:definitions]	The handler definitions.
[event]	The event.
[event:machine_name]	The machine name of the ECA event.
[session_user]	The user account that dispatched the event, regardless if ECA is processing models under a different account. This is only available if ECA is configured to always run under a specific account.

Fires during WebformSourceEntity plugin discovery, allowing modification of how webforms discover their source entity context (e.g., the node containing a webform field).