I would like to add my own custom basemaps to the BasemapGallery. Is there any way I can create my own BasemapGallery with only my maps? I am using the ArcGIS API for javascript.

EDIT: for clarity

I have already created a custom basemap that the answer here describes. The issue is that I would like to create a Basemap Gallery but with my own basemap, not ArcGIS's. I hope this makes a little more sense now.