Etapas do funil
List the stages of a pipeline
The columns of one pipeline, as a bare array.
Add a stage to a pipeline
Adds a column to a pipeline. The body goes under a `deal_stage` key.
Get a stage
Returns one column of a pipeline.
Update a stage
Updates one column. Every field is optional; only what you send changes.
Delete a stage
Removes a column from a pipeline.