What does the load() function expect as a return when we are adding a new storage?

[capoia]

Hello, I would like to know what exactly I need (the format) to return in the load() function for it to properly load the components and styles.
I apologize if this is somewhere, I really looked for it even within the repository, but I only found a generic type:

[artf]

The ProjectData, is the GrapesJS JSON of the project, eg. the one you get with editor.getProjectData()