body
Set the request body for the most recently added webhook. Used for POST/PUT
requests. Writes to the body key of the webhook definition.
body() and params() write to different keys in the webhook
specification: body sets the request body, while params sets
query/form parameters.
Parameters
data
Request body data. Supports ${variable} substitutions.
Returns
DataMap — Self for method chaining. Throws an Error if no webhook
has been added yet.