How can i add another kind of fuel like MOX fuel cells from plutonium energy?

The fuel must have [fuel_category = "nuclear"]

data.raw.item["uranium-fuel-cell"].type = "item" 
data.raw.item["uranium-fuel-cell"].name = "uranium-fuel-cell" 
data.raw.item["uranium-fuel-cell"].icon = "__base__/graphics/icons/uranium-fuel-cell.png" 
data.raw.item["uranium-fuel-cell"].icon_size = 32 
data.raw.item["uranium-fuel-cell"].subgroup = "intermediate-product" 
data.raw.item["uranium-fuel-cell"].order = "r[uranium-processing]-a[uranium-fuel-cell]" 
data.raw.item["uranium-fuel-cell"].fuel_category = "nuclear" 
data.raw.item["uranium-fuel-cell"].burnt_result = "used-up-uranium-fuel-cell" 
data.raw.item["uranium-fuel-cell"].fuel_value = "8GJ" 
data.raw.item["uranium-fuel-cell"].stack_size = 50 

MOX fuel and plutonium must have it by default