This is a composite action used in the workflow of updating a model. This process is evident in Nobrainer's Trained-Models repository action course.
In addition, this composite action is used to compress the amount of code in a single workflow, and avoid duplication with the first workflow in Trained-models: Add a new model.
In summary, this action will:
Create a new branch for the issue linked. Parse the issue form's information/text fields. Save the parsed information to output variables to be used within the context of the calling workflow.